Home

MS260i™ - Newport Corporation

1. 61 18 2 LABVIEW USERS dici da dedico Delega s cia aves baee a 61 19 3 ICH USERS Lilia Mata based A E bete Mu ee 62 B E e e EN 65 APPENDIX IV GRATING PHYSICS TUTORIAL 66 1971 THE GRATING EQUA entienda tun careant dra a na raya Rd ama ei dao 66 19 2 THE GRATING EQUATION IN PRACTICE 67 19 9 GRATING ORDER aerae i us 68 19 4 GRATING DISPERSIOLD iin dada ata 69 19 5 GRATING ILLUMINATION AND RESOLUTION i 69 WARRANTY AND SERVICE ne nenne nnne nsn nn 70 20 1 CONTACTING NEWPORT 70 20 2 REQUEST FOR ASSISTANCE SERVICE 71 20 3 5 71 20 4 NON WARRANTY REPAIR 71 20 5 WARRANTY REPAIR ana 72 20 6 LOANER DEMO essere
2. 17 E MOTORIZED qa Me AR 19 6 DIFFRACTION GRATINGS Do abuse cord tel qun E b D me LU 20 0 1 GRATING TYPES ated Mosam cedat ROSSI e Ud E TUR IF 21 6 2 GRATING EFFICIENCY AND BLAZING 22 POLARIZATION EFFECTS csi citus db 25 7 SPECTROGRAPH RESOLUTION AND BANDPASS 26 7 4 DETERMINING RESOLUTION ill 27 8 GETTING LIGHT INTO A 29 B4 JAC CEP TANCE PYRAMID sa ss aa 29 8 2 F NUMBER MATCHING 30 9 BLOCKING HIGHER ORDER RADIATION sisien 81 bap ORDER SORTING PIETER Ss 31 10 COMMUNICATION METHODS desidia ala 32 10 1 UTILITY cte aet idis cee 33 10 2 HAND CONTROLLER alain 34 10 3 BASIC SOFTWARE aaa 35 10 4 LOW LEVEL COMMAND Sai ca Dieu tearing n OE 36 10 5 MONO TERM SOFTWARE AND LABVIEW EXAMPLES 36 11 GRATING INSTALLATION AND 37 114 HEGALIBRATION SERVICES cuca agi irradiada 37 11 2 SETTING THE WAVELENGTH OFFSET 37 11 3 DETERMINING THE GRATING CALIBRATION 38 11
3. 45 Figure 33 Micrometer Adjustable Slit 46 Figure 34 Model 74104 Mounting 46 Figure 35 74009 Hand Controller 58 Figure 36 MonoTerm LabVIEW Source 61 Figure 37 The Sawtooth Pattern of a Grating eene 66 Figure 38 The Grating Equation Satisfied for a Parallel Beam of Monochromatic Light 67 Figure 39 Polychromatic Light Diffracted From a 2 67 Figure 40 Sign Convention for the Angle of Incidence Angle of Diffraction and Grating Angle 68 MMS260i 1 4M IMAGING SPECTROGRAPHS 5 1 GENERAL INFORMATION Thank you for your purchase of this MS260i Imaging Spectrograph from Oriel Instruments Please carefully read the following important safety precautions prior to unpacking and operating this equipment In addition please refer to the complete User s Manual and all other documentation provided for additional important notes and cautionary statements regarding the use and operation of the system Do not attempt to operate any system without reading all the information provided with each of the components Please read all instructions that were provided prior to operation of the system If there are any questions pleas
4. 73 MMS260i 1 4M IMAGING SPECTROGRAPHS 4 LIST OF FIGURES Figure 1 Optical Configuration of the 82601 9 Figure 2 Model Number Codes 10 Figure 3 Model 74104 Mounting 12 Figure 4 Spectrograph 14 Figure 5 Remote Shutter Control BNC 15 Figure 6 A Fixed Slit Installed into the 16 Figure 7 Available Fixed 16 Figure 8 A Micrometer Adjustable Slit 17 Figure 9 A Fully Closed Micrometer Adjustable 17 Figure 10 Shortest Micrometer Adjustable Slit 18 Figure 11 Tallest Micrometer Adjustable Slit 18 Figure 12 A Motorized Sli oiu rum eter bene teen in xt perdue E 19 Figure 13 Mono Utility Software Slit 19 Figure 14 Gratings Installed onto Mounts 20 Figure 15 Grating Properties Table ndr rte eil 21 Figure 16 Grating Efficiency Curves High Resolution and Holographic 23 Figure 17 Grating Efficiency Curves Ext
5. one for the input port and the other for the output port Insert the slit as shown with the label facing outward Be sure that it is fully inserted into the holder s slot to ensure the best performance and repeatability Figure 6 A Fixed Slit Installed into the Holder Fixed Slit Model Width Height 77222 10 um 2mm 77220 25 um 3mm 77725 25 um 3mm 77221 50 um 6mm 77219 50 um 3mm 77728 100 um 6mm 77729 100 um 3mm 77730 200 um 10 mm 77731 200 um 3mm 77732 500 um 10 mm Figure 7 Available Fixed Slits MMS260i 1 4M IMAGING SPECTROGRAPHS 17 5 2 MICROMETER ADJUSTABLE SLIT A micrometer adjustable slit assembly is continuously variable from fully closed to 3 mm width A height adjustment slide allows variation in the height from 2 to 12 mm Benefits of the micrometer adjustable slit are flexibility and high throughput This type of slit is designed primarily for versatility and convenience in changing resolution and throughput which are related to the slit width DAR D The micrometer is used to make the slit narrow or wide A 9 N Ne 09 The slide is used to change the slit height Figure 8 A Micrometer Adjustable Slit The slit width setting is read on the micrometer A set of numbers go around the turning dial Another set of numbers are located on the shaft When the zeroes in both these locations line up the slit is fully
6. M No Error ee TA post Send Time s response string No Session Active Please start a new session Response Memory Figure 36 MonoTerm LabVIEW Source Code MMS260i 1 4M IMAGING SPECTROGRAPHS 62 18 3 C USERS This demonstrates how to call the DLL in C NET Below the code is how to add a DLL Reference to a NET project Summary Add Code Reference to both the Cornerstone DLL and the CyUSB Cypress DLL In the Form Designer file Form D add the using sections Form D Create new Cornerstone object Form D optional PON Changes to Form Designer file SR using CyUSB using CornerstoneDIl namespace CornerstoneApp partial class MainForm Ill lt summary gt Masi USBDeviceList usbDevices CyUSBDevice cornerstone Cornerstone cs new Cornerstone true Int32 deviceCount 0 public MainForm InitializeComponent This is C standard form init function connect usbDevices DeviceAttached new EventHandler usbDevices DeviceAttached usbDevices DeviceRemoved new EventHandler usbDevices DeviceRemoved Ill These two functions below handle dynamic USB plug and unplug events void usbDevices DeviceRemoved object sender EventArgs e USBEventArgs usbEvent e as USBEventArgs MMS260i 1 4M IMAGING SPECTROGRAPHS 63 cs disconnect void usbDevices_DeviceAttached object sender EventA
7. GRAT2ZERO Sets the zero parameter for grating 1 as the floating point parameter specified in XXX XXX Warning this value is used to calculate wavelength motion Zero is usually changed only when changing the instrument from a double grating configuration to triple grating configuration or visa versa The value for a double grating configuration is 3 2288591 For a triple grating configuration the value is 2 1816616 GRAT3ZERO XXX XXX GRAT3ZERO Sets the zero parameter for grating 1 as the floating point parameter specified in XXX XXX Warning this value is used to calculate wavelength motion Zero is usually changed only when changing the instrument from a double grating configuration to triple grating configuration or visa versa The value for a double grating configuration is 3 2288591 For a triple grating configuration the value is 4 2760567 MMS260i 1 4M IMAGING SPECTROGRAPHS 55 MS260i Accessory Commands SHUTTER T SHUTTER SHUTTER Closes or opens the shutter depending upon the single letter mnemonic parameter T Closing the shutter requires C whereas opening it requires O The response to SHUTTER is simply the one character parameter describing the current state When using the Hand Controller key SHUTTER no parameter is necessary Pressing this key toggles the shutter out of the current state into the other state Look to the display to check shutter position FILTER X FILTER FILTER Moves the filte
8. 14 750 374 6 14 528 369 e 13 069 332 1750 000 1 818 28 818 46 17 731 97 000 30 00 762 55 CR Dimension in inches mm Figure 34 Model 74104 Mounting Kit MMS260i 1 4M IMAGING SPECTROGRAPHS 47 15 EU DECLARATION OF CONFORMITY We declare that the accompanying product identified with the C mark complies with requirements of the Electromagnetic Compatibility Directive 2014 30 EU and the Low Voltage Directive 2006 95 EC Model Numbers MS260i RG x xx A MS260i RG x xx D MS260i USB x xx A MS260i USB x xx D Please refer to drawing 90075915 Rev A for the full model numbers Year C mark affixed 2015 Type of Equipment Electrical equipment for measurement control and laboratory use in industrial locations Manufacturer Newport Corporation 1791 Deere Avenue Irvine CA 92606 Standards Applied Compliance was demonstrated to the following standards to the extent applicable BS EN61326 1 2013 Electrical equipment for measurement control and laboratory use EMC requirements for use in a controlled electromagnetic environment fak Corradi Mark Carroll Sr Director Instruments Business Newport Corporation 1791 Deere Ave Irvine CA92606 USA MMS260i 1 4M IMAGING SPECTROGRAPHS 48 16 APPENDIX I LOW LEVEL COMMANDS AND QUERIES 16 1 OPENING LOW LEVEL COMMUNICATION INTERFACE Commands and Queries may be sent using Oriel s MonoTerm software HyperTerminal or o
9. 4 GRATING INSTALLATION sd 39 12 TROUBLESHOOTING azar tei bia naa Mos 41 12 1 CORRUPTED MEMORIA nori 41 12 2 GRATING TURRET POSITION ERROR serras 42 13 SPECIFICATIONS asi 43 14 DIMENSIONS alitalia 45 15 EU DECLARATION OF 47 16 APPENDIX I LOW LEVEL COMMANDS AND QUERIES 48 MMS260i 1 4M IMAGING SPECTROGRAPHS 3 16 1 OPENING LOW LEVEL COMMUNICATION 48 16 2 COMMAND AND QUERY 48 16 3 STANDARD 49 16 4 HANDSHAKE MODE 50 16 5 COMMAND REFERENCE 51 16 6 DETAILED COMMAND REFERENCE 52 16 7 ERROR CODES FOR LOW LEVEL COMMANDS 57 APPENDIX Il HAND CONTROLLER COMMANDS seem 58 17 1 ACTIVATING THE HAND 58 17 2 USINGATHEKEYPAD A 58 ae een E 59 APPENDIX USB 5 i bales bte ea da balay 61 18 1 GENERAL
10. as to possible errors that may occur if a command is not used properly MS260i Motion Commands UNITS TT UNITS UNITS Specifies the operational units designated by the mnemonic parameter TT Possible parameters are NM for nanometers UM for micrometers WN for wavenumbers cm By default the MS260i uses nanometers Parameters for all motion Statements are handled in the current units When changing from nanometers to micrometers GOWAVE parameter must be entered in micrometers Likewise WAVE answers will be returned in micrometers The response to UNITS is always the two character mnemonic for the current units GOWAVE XXX XXX WAVE GO WAVE Moves the wavelength drive at maximum speed to the step position closest to the specified wavelength parameter This parameter must be in the current units and may be either a floating point number an integer i e GOWAVE 500 00 If and GOWAVE 500 will be understood the same way For each grating there is a maximum possible wavelength approximately 1400 nm for a 1200 line mm grating thus 700 nm for a 2400 etc This command will generate an error if the parameter is larger than the maximum wavelength The response to WAVE will be a floating point number indicating the exact wavelength position Current units are assumed and so no units are passed with the floating point number CALIBRATE XXX XXX CALIB This command is used to make minor correction
11. closed Turning the dial clockwise advances the dial position further down on the shaft closer to the body of the micrometer This opens the slit Use a 10x multiplier to convert the micrometer reading to the actual slit opening size For example turning the dial one full revolution starting from the fully closed position will give a reading of 50 on the micrometer Using the multiplier this indicates the micrometer width is set to 500 um If unsure of the reading begin at the fully closed position and add up each full revolution made Figure 9 A Fully Closed Micrometer Adjustable Slit MMS260i 1 4M IMAGING SPECTROGRAPHS 18 The slit height is continuously adjustable Pull the lever out for the shortest height Push the slide in for the tallest height setting Use a 10x multiplier to convert the micrometer reading to the actual slit opening size For example turning the dial one full revolution starting from the fully closed position will give a reading of 50 on the micrometer Using the multiplier this indicates the micrometer width is set to 500 um If unsure of the reading begin at the fully closed position and add up each full revolution made Figure 10 Shortest Micrometer Adjustable Slit Height Figure 11 Tallest Micrometer Adjustable Slit Height MMS260i 1 4M IMAGING SPECTROGRAPHS 19 5 3 MOTORIZED SLIT A motorized slit assembly may be adjusted from 6 um to 2 mm width in 6 um steps The slit width is co
12. enter the desired wavelength and finally press ENTER to execute the move Press this key to move to the other grating position Press GRAT then press either 1 or 2 on the numeric keypad and finally press ENTER to execute the change The display will update to show the correct parameters for the new grating This key located directly above GRAT provides access to the grating label The label is an eight character alpha numeric field that is used for information only Newport puts the grating blaze wavelength as the label during calibration However you can use the keypad to type any number then press ENTER to accept that new value The Hand Controller display only shows the first four digits of the label and you can only enter numbers Press this key to change the lines mm of the grating This value is used for wavelength calculations and will affect your calibration This parameter should be changed only when adding a new grating This button is used to change the wavelength calibration of the current grating Use the GO WAVE STEP DOWN and STEP UP keys to move to a known wavelength often the intensity peak for a spectral calibration lamp If the wavelength shown in the top row of the display does not match the known value press SHIFT CALIB and use the numeric keypad to enter the known wavelength Then press ENTER to change the calibration The current grating is thus calibrated over its entire range Alternately open and close th
13. for that particular error using the query ERROR Likewise the Status Byte is cleared after it is reported as the handshake Read Status Byte with STB 00 indicates no error 20 indicates error condition Read Error Code with ERROR Error codes are listed below Error code Condition 1 Command not understood 2 Bad parameter used in Command 3 Destination position for wavelength motion not allowed 6 Accessory not present usually filter wheel 7 Accessory already in specified position 8 Could not home wavelength drive 9 Label too long 0 System error miscellaneous MMS260i 1 4M IMAGING SPECTROGRAPHS 58 17 APPENDIX Il HAND CONTROLLER COMMANDS The optional 74009 Hand Controller is designed specifically for use with Oriel s Cornerstone series monochromators and MS260i spectrographs It is very easy to set up simply plug it into the instrument and it s ready to go There is no need to purchase a computer and set up the software The Hand Controller is a very convenient option in locations where security is an issue such as defense facilities and universities There is no need to memorize commands or key sequences The 24 keys are clearly labeled with functions like Shutter Go Wave and Filter The backlit LCD display provides information on the grating selection grating line density active filter position current wavelength and shutter status Using the Hand Controller is intuitive and provides access to
14. from ghosts so interpretation of line spectra is simplified GRATING PROPERTIES Groove Blaze Array Grating Density Wavelength Bandpass Configuration Position Type lines mm nm nm 1 1200 360 80 High Resolution 2 Ruled 1200 500 81 3 Ruled 1200 750 80 it Holographic 1200 250 80 Holographic 2 Holographic 1800 500 50 1 Ruled 600 200 160 Extended Range 2 Ruled 600 400 165 3 Ruled 600 1000 160 1 Ruled 300 500 325 Wide Bandwidth 2 Ruled 300 1000 325 3 Ruled 300 2000 325 Bandpass is measured across a 1 inch array with grating centered at blaze wavelength Figure 15 Grating Properties Table MMS260i 1 4M IMAGING SPECTROGRAPHS 22 6 2 GRATING EFFICIENCY AND BLAZING Efficiency and its variation with wavelength and spectral order are important characteristics of a diffraction grating For a reflection grating efficiency is defined as the energy flow power of monochromatic light diffracted into the order being measured relative either to the energy flow of the incident light absolute efficiency or to the energy flow of specular reflection from a polished mirror substrate coated with the same material relative efficiency Efficiency is defined similarly for transmission gratings except that an uncoated substrate is used in the measurement of relative efficiency High efficiency gratings are desirable for several reasons A grating with high effici
15. have two or three gratings installed Spectral Line Observed Peak Wavelength 1 Wavelength 2 FACTOR 1 12 1 2 Example Spectral Line Observed Peak Wavelength 1 546 br Wavelength 2 365 372 FACTOR 546 365 577 372 181 205 0 8829268 MMS260i 1 4M IMAGING SPECTROGRAPHS 39 11 4 GRATING INSTALLATION Each grating comes mounted and aligned on a grating mount For most applications there is no need to adjust this grating holder Refer to the general warnings and precautions section of this manual regarding the care and handling of diffraction gratings Note that only one grating should be replaced at a time Procedure Boom 11 14 15 16 17 Using the MS260i Hand Controller or utility software close the shutter Command the MS260i to go to the grating that is to be replaced Go to wavelength 0 The grating facing the collimating mirror is the grating that was selected Turn off the power switch on the spectrograph and unplug the instrument from the electrical mains Remove all screws holding the spectrograph cover in place then remove the cover Two long screws one on each side of the grating must be removed Used a screwdriver to loosen these screws Grasp the sides of the grating mount with one hand and firmly pull the grating up and out of the instrument Pull in a direction parallel to the grating face not directly upwards Durin
16. nearly all the functionality of the spectrographs and spectrographs It comes with a 14 foot 4 3 meter long cable 17 1 ACTIVATING THE HAND CONTROLLER With the Hand Controller connected turn on power to the MS260i A horizontal cursor will appear in the upper left corner of the display Press the LOCAL key to activate communications through the Hand Controller Please note that if the Hand Controller is active the display is lit and information fills the screen you cannot command the MS260i via either RS 232 IEEE 488 or USB Press the LOCAL key again to deactivate the Hand Controller allowing PC communications 17 2 USING THE KEYPAD Some keys are divided into top and bottom halves The function for the yellow top half is called a shifted function To activate these commands press the SHIFT key in the bottom left corner and then press the function key Many of the MS260i commands require a numeric parameter First press the function key for your command The bottom line of the LCD display will then show an abbreviated form of the command and the current parameter There is no need to erase this number simply typing the first key for your desired parameter will overwrite the current value To execute the command press the ENTER key in the bottom right corner While entering parameters if you mistype one digit press SHIFT and then DEL above the decimal point in the numeric keypad this will move backward one display position and del
17. saturation of a detection system it is suggested to close the shutter temporarily while changing gratings It is especially important to prevent saturation and possible damage when using a photomultiplier tube A scan may be completed while the shutter is closed to perform background subtraction calculations on subsequent scans completed while the shutter is open Please note that the shutter is not designed to block high power direct light When using a 450W or greater light source heat mitigation strategies should be employed For example Oriel offers liquid filters to protect the shutter filters and other items to prevent potential heat damage 4 1 REMOTE OPERATION The BNC female connector located on the outside of the spectrograph allows the shutter to be controlled remotely if desired A TTL low condition will open the shutter The shutter may also be opened by completing a connection between the BNC conductor and shield i e shorting out the connector Control can be overridden by the shutter commands issued from a computer or the optional hand controller Figure 5 Remote Shutter Control BNC Connector MMS260i 1 4M IMAGING SPECTROGRAPHS 16 5 SLITS AND ARRAY DETECTOR ADAPTER To operate any spectrograph a slits are required at the input port All types of slits offered with the MS260i all have 1 5 inch male flanges allowing them to be easily connected to the wide variety of Oriel accessories and instruments The dete
18. supply Do not attempt to work in the instrument compartment without first disconnecting the power cord since electrical hazards are present inside the compartment even with the power switch in the off position The MS260i contains a microprocessor and should be installed with appropriate surge EMI RFI protection on the power line A dedicated power line or line isolation may be required for some extremely noisy sites The electronic circuits within the spectrograph are extremely sensitive to static electricity and radiated electromagnetic fields Operation of this instrument close to intense pulsed sources lasers xenon strobes arc lamps etc may compromise performance if shielding is inadequate and may cause permanent damage to the microprocessor Note This instrument conforms to CE standards for both safety and EMC During normal use this equipment will not pose any electrical hazards to the user Read all warnings before installing or operating this system If there are any questions or concerns contact Oriel Instruments or the regional sales representative for Newport MMS260i 1 4M IMAGING SPECTROGRAPHS 8 1 4 1 5 MECHANICAL HANDLING Avoid dropping sudden shocks or rough handling of the spectrograph since this may cause the system to lose its calibration and may destroy the high precision drive components or optics OPTICS CARE AND HANDLING Do not touch any optical surfaces since this is likely to cause irrepara
19. wavelength to A that can be resolved Theoretically W sinl sin D Where dA Resolution W Illuminated width of the grating Normally the smallest slit available and optical aberrations rather than the grating determine the attainable resolution As an example a spectrograph in this case Oriel s MS257 model is set to A 500 nm with a 1200 I mm grating R is 60000 with a fully illuminated grating Based on this 5A is 0 008 nm With 25 um slits the product of slit width and reciprocal linear dispersion is 0 09 nm which is close to the measured value of 0 1 nm and R 5000 instead of 60000 If however only a few mm of the grating are illuminated as is sometimes the case with laser sources incorrectly coupled to the spectrograph the grating resolution can broaden the measured bandwidths For example if a laser illuminates only 2 mm of the grating width the measured bandwidth will be 0 2 nm even for a very narrowband laser Very short pulse ps lasers will only illuminate a small portion of the grating at any instant The resolution is degraded in agreement with Heisenberg s Uncertainty Principle If two spectrographs are used in tandem then the reciprocal linear dispersion of the combination is half that of a single spectrograph MMS260i 1 4M IMAGING SPECTROGRAPHS 70 20 WARRANTY AND SERVICE 20 1 CONTACTING NEWPORT CORPORATION Oriel Instruments belongs to Newport Corporation s family of brands Thank
20. 4010 Apex2 Filter Wheel Utility Software Requirements Windows 7 32 bit or 64 bit operating system Windows XP compatible software also available Basic Software Yes provides grating and filter control Compatible 74009 Hand Controller Yes Compatible 100 240 VAC 47 63 Hz 100 240 VAC 47 63 Hz Weight 21 Ib 9 5 kg Wavelength Accuracy the capability of the spectrograph to output the desired wavelength Wavelength Precision the ability of a wavelength to be consistently reproduced and the number of significant digits to which it has been reliably measured MMS260i 1 4M IMAGING SPECTROGRAPHS 44 Motorized Slit Specifications Width Range 6 um to 2 mm in 6 um increments Height 15 mm Repeatability 5 um Accuracy 10 um Micrometer Adjustable Slit Specifications Width Range 4 um to 3 mm Height 3 mm to 12 mm Repeatability 10 um Accuracy 10 um width from 4 um to 250 um MMS260i 1 4M IMAGING SPECTROGRAPHS 45 14 DIMENSIONS 1 5 INCH DISTANCE SERIES FROM MALE OUTSIDE FLANGE WALL TO FOCAL PLANE 10 mm 1 5 38 x 0 76 19 05 EXIT SLOT 40 mm Figure 32 MS260i Dimensions MMS260i 1 4M IMAGING SPECTROGRAPHS 46 0 88 22 3 DIA 1 5 INCH SERIES Figure 33 Micrometer Adjustable Slit Dimensions 265 WIDE x 1 00 LONG MOUNTING SLOT 5 PLACES 15 50 393 7
21. A number must be obtained prior to shipment to Newport This RMA number must appear on both the shipping container and the package documents Return the product to Newport freight prepaid clearly marked with the RMA number and it either will be repaired or replaced it at Newport s discretion Newport is not responsible for damage occurring in transit The Owner of the product bears all risk of loss or damage to the returned Products until delivery at Newport s facility Newport is not responsible for product damage once it has left the facility after repair or replacement has been completed Newport is not obligated to accept products returned without an RMA number Any return shipment received by Newport without an RMA number may be reshipped by Newport freight collect to the Owner of the product 20 4 NON WARRANTY REPAIR For Products returned for repair that are not covered under warranty Newport s standard repair charges shall be applicable in addition to all shipping expenses Unless otherwise stated in Newport s repair quote any such out of warranty repairs are warranted for ninety 90 days from date of shipment of the repaired Product Newport will charge an evaluation fee to examine the product and determine the most appropriate course of action Payment information must be obtained prior to having an RMA number assigned Customers may use a valid credit card and those who have an existing account with Newport Corporation may
22. ER Those three number keys are labeled with the corresponding units 1 is nanometers nm 2 is micrometers um and 3 is wave numbers shown Pressing the 1 key when not in a function parameter edit mode brings ups the Slitium prompt to edit enter the slit 1 size the slit at the input port the integer parameter is the open size specified in microns Slit range is 6 2000 microns in 6 micron resolution steps for values larger than 2000 the slit goes to 2000 for values 0 6 the slit goes to 6 Pressing the SHIFT 1 key when not in a function parameter edit mode brings ups the Banapass prompt The floating point parameter is the wavelength resolution to automatically adjust slits for If Bandpass is not set at zero the CS260 will be adjust all slits to maintain the Bandpass resolution at wavelength moves and grating changes Setting Bandpass to 0 turns off this automatic adjustment Slit range is 6 2000 microns in 6 micron resolution steps For Bandpass adjustments requiring slit openings larger than 2000 the slit goes to 2000 for values 0 6 the slit goes to 6 MMS260i 1 4M IMAGING SPECTROGRAPHS 61 18 APPENDIX 111 USB DLL The MS260i USB DLL is shared by the Cornerstone 260 monochromators It is named Cornerstone dll and is located in the C Program Files Newport Mono Utility x x x Cornerstone DLL directory with x x x indicating the revision level of the software The following DLLs are pr
23. HAKE This command turns Handshake Mode on and off Setting the parameter X to 1 causes the MS260i to acknowledge command completion according to the description given in 5 1 2 Standard Mode Setting the parameter to 0 returns the MS260i to normal operation according to the description given in the section in this manual entitled Standard Mode The response to the query HANDSHAKE is the single integer describing the current mode 0 or 1 STB Use this query to check for MS260i error conditions The response will be 32 when an error occurred or 00 when no error is present Reading this code clears the status byte Further information can be obtained using the ERROR query below A detailed discussion of error handling is provided in this user s manual ERROR Use this query to obtain further information about an error state reported in the Status byte The response will be an integer from O through 9 The definition of each error code and a detailed discussion of error handling are provided in this user s manual ADDRESS XX ADDRESS Use this command to change the IEEE 488 primary address for the MS260i if the default address 4 conflicts with another instrument in the laboratory Turn off the other instrument s establish communication with the MS260i and then send this command with the integer parameter from 1 to 30 If successful the address change takes place immediately and any further comm
24. ING SPECTROGRAPHS 40 Figure 29 Grating Platform With Three Gratings Installed MMS260i 1 4M IMAGING SPECTROGRAPHS 41 12 TROUBLESHOOTING This section suggests solutions to potential issues that may be encountered when operating the MS260i spectrograph If the tips in this section do not restore the instrument to working condition contact Newport to arrange for technical support or repair Contact information can be found in the Warranty and Service section of this user s manual 12 1 CORRUPTED MEMORY The spectrograph comes with calibration parameters which are stored in a file on the memory stick shipped with the instrument If these parameters were corrupted from possibly performing an incorrect field calibration they will need to be reset Other possible causes include electrostatic discharge or other high field radiation near or in contact with the instrument The instrument parameters need to be reloaded from the calibration parameter sheet Use the utility program and select the first grating Update the parameters for this grating Then go to the second grating and third grating if equipped to also update these parameters io Mono Utility ARE rs for Cornerstone Series ator Newport Corporation Brand Grating Filter Calibration Slits Present Wavelength nm Grating Number Current Grating Grating Blaze Grating Lines i 1 750 600 Set Wavelength 546 000 Autom
25. ION GRATINGS Diffraction gratings are used to disperse light i e to spatially separate light of different wavelengths They have replaced prisms in most fields of spectral analysis Two or three gratings are installed into the MS260i spectrograph depending upon the configuration selected In general the grating with the highest efficiency is chosen at a particular wavelength The optional Oriel TracQ Basic Data Acquisition and Radiometery Software allows users to set up a specific grating switchover wavelength so the most appropriate grating will automatically be chosen while performing a scan over a range of wavelengths The MS260i spectrographs feature diffraction gratings produced by Richardson Gratings Both Oriel Instruments and Richardson Gratings are part of the Newport family of brands and have a long history of working together to design spectrographs that are appropriate for a wide variety of applications A tutorial on grating physics may be found in the Appendix of this user s manual The photo below illustrates diffraction gratings mounted into holders for installation into the MS260i spectrograph The grating is precisely positioned on the mount using a fixture and then the grating angle is aligned by Oriel with the screws locked into place using the red adhesive An unmounted grating cannot be installed by the user in the field gratings must be installed onto the appropriate mount for the MS260i spectrograph and aligned at
26. MS260i Oriel 1 4m Imaging Spectrograph Family User s Manual FIEL INSTRUMENTS A Newport Corporation Brand GS Newport Family of Brands ILX Lightwave New Focus Ophir Corion Richardson Gratings Spectra Physics MMS260i Rev A MMS260i 1 4M IMAGING SPECTROGRAPHS 2 TABLE OF CONTENTS y GENERAL INFORMATION aurato cR Rand tae tu 5 TE SYMBOLS AND DEFINITIONS 25 1 i 6 109 GENERAL WARNINGS dafs tenu 7 1 27 ELECTRICAL HAZARDS S csi ven 7 149 MECHANICAL HANDLING ia ceia na 8 1 5 SOP TICS CARE ANDHAND LING up tone ST dandi eiie 8 8 INTRODUCTION s uai tamales sensation ek ona 9 Di OPTICAL CONFIGURA TION a NUR asi 9 2 2 STRAY LIGHT REJECTION oi etii uates 10 9 3 AVAILABLE MODELS ani 10 ESE 11 dur INCLUDED Giai 11 MUS 11 3 3 CHOOSING A LOCATION aed s mgt Aarts snc austin aca xD 11 242 SIMON TING OP MONG sa Aveta ued Need 12 3 5 ELECTRICAL AND COMPUTER CONNECTIONS 13 A SA TMs ara sled haat bia tU Mascara tesi ted uta 15 i BREMOTEOPEBATION s monet RR 15 5 SLITS AND ARRAY DETECTOR ADAPTER 16 5 1 FIXED SLIT HOLDER AND FIXED 16 5 2 MICROMETER ADJUSTABLE 11
27. Note that the Hand Controller only displays four characters however all eight may be entered Also the Hand Controller only changes the current grating parameters GRAT1LINES XXXX GRATILINES LINES Sets the lines per millimeter of grating 1 to the integer parameter specified as XXXX Warning this value is used to calculate wavelength motion Lines mm is usually changed only when installing a new grating and in that case the parameter should match the value provided by Newport Note the Hand Controller only changes the current grating parameters GRAT2LINES XXXX GRAT2LINES LINES Sets the lines per millimeter of grating 2 to the integer parameter specified as XXXX Warning this value is used to calculate wavelength motion Lines mm is usually changed only when installing a new grating and in that case the parameter should match the value provided by Newport Note the Hand Controller only changes the current grating parameters GRATSLINES XXXX GRAT3LINES LINES Sets the lines per millimeter of grating 3 to the integer parameter specified as XXXX Warning this value is used to calculate wavelength motion Lines mm is usually changed only when installing a new grating and in that case the parameter should match the value provided by Newport Note the Hand Controller only changes the current grating parameters GRAT1FACTOR XXX XXX GRAT1FACTOR Sets the calibration factor of grating 1 to the numeric parameter specified
28. S260i to an optical table or breadboard On the spectrograph s mounting surface four 1 4 20 threaded holes may be used to install standard optical rods Care should be taken to ensure the instrument is level and secured well enough that its location remains consistent over time even if the instrument is bumped or components coupled to the ports D n n o n B o 00000000 o o o o n 00000000 00000000 00000000 e Q Figure 3 Model 74104 Mounting Kit MMS260i 1 4M IMAGING SPECTROGRAPHS 13 3 5 ELECTRICAL AND COMPUTER CONNECTIONS Before powering up the system for the first time it is suggested to have a qualified electrician verify the wall socket to be used with the instrument meets the requirements for operation as noted Before making any electrical connections verify the front panel power switch is in the off position for the spectrograph WARNING To avoid electric shock connect the instrument to properly earth grounded 3 prong receptacles only Failure to observe this precaution can result in severe injury or death The line voltage requirement is as follows Spectrograph Power Adapter 100 to 240 VAC 47 63 Hz The spectrograph conforms to CE standards for both safety and EMC During normal use this equipment will not pose any electrical hazards to the user Read all warnings
29. a grating should be selected or polarization which has no significant anomaly in the spectral region of interest Contact an Oriel sales engineer for more information on the effects of polarized light in terms of grating efficiency MMS260i 1 4M IMAGING SPECTROGRAPHS 26 7 SPECTROGRAPH RESOLUTION AND BANDPASS Gratings are available in various groove densities i e lines mm Higher groove densities have higher reciprocal dispersion and therefore higher resolution The spectrograph bandpass with a 1200 lines mm grating is half that of the same arrangement with a 600 lines mm grating Note that this simple relationship is not accurate for slit widths below 50 as the optical aberrations begin to play a role in the bandpass and resolution Using a grating with a high groove density may increase resolution but the spectral range narrows The dispersion of a grating changes inversely with the groove density If the groove density is halved the dispersion is doubled A spectrograph mechanism can only tilt the grating through a limited range of angles The angle and groove density determine the transmitted wavelength The gratings can be tilted to 0 degrees so the lowest possible wavelength for a UV grating is set by the transmittance of air at about 180 nm The ability to output wavelengths below 180 nm is also dependent on the efficiency characteristics of the grating The following graphs are intended to illustrate the effects of sli
30. an error byte where each bit has a specific meaning Details of the status and error bytes can be found in this manual under Error Codes In all cases Statements must be terminated properly with If for he MS260i to take any action Statements that are not understood or parameters that are unacceptable generate an error code in the status byte i e status byte 0 This status byte will be reported immediately if it contains an error otherwise the status byte 00 will be returned upon completion of the Statement Correct Statements are handled as follows Commands Under RS 232 Statements are echoed back to the PC Thus after sending a Command this echo should be read back Additionally the status byte is reported when the action is complete Example Send GOWAVE 500 If Response GOWAVE 500J If O0 cr If Under IEEE 488 and USB there is no echo The only response will be the status byte Example Send GOWAVE 500 If Response O0 cr If Queries Under RS 232 Statements are echoed back to the PC Additionally there will be an explicit response to that query and the statues byte After sending a Query a three part answer should be read back Example Send WAVE If Response WAVE If 500 cr IfJOO cr If Under IEEE 488 and USB there is no echo Thus you will read back the Response and the status byte Example Send Response 500 cr IfJOO cr If MMS260i 1 4M IMAGING SPECTROGRAPHS 51 Comm
31. and ABORT ADDRESS XX BANDPASS XXX XX CALIBRATE XXX XXX FILTER X FILTER1LABEL TTTTTTTT GOWAVE XXX XXX GRAT X GRAT1FACTOR XXX XXX GRATILABEL TTTTTTTT GRATILINES XXXX GRAT1OFFSET XXX XXX GRAT1ZERO XXX XXX GRAT2FACTOR XXX XXX GRAT2LABEL TTTTTTTT GRAT2LINES XXXX GRAT2OFFSET XXX XXX GRAT2ZERO XXX XXX GRAT3FACTOR XXX XXX GRATSLABEL TTTTTTTT GRAT3LINES XXXX GRATSOFFSET XXX XXX GRAT3ZERO XXX XXX HANDSHAKE X INFO SHUTTER T SLIT1MICRONS XXXX STEP XXX UNITS TT 16 5 COMMAND REFERENCE SUMMARY Query ADDRESS BANDPASS ERROR FILTER FILTER1LABEL WAVE GRAT GRAT1FACTOR GRAT1LABEL GRATILINES GRAT1OFFSET GRAT1ZERO GRAT2FACTOR GRAT2LABEL GRAT2LINES GRAT2OFFSET GRAT2ZERO GRAT3FACTOR GRAT3LABEL GRATSLINES GRATSOFFSET GRAT3ZERO HANDSHAKE SHUTTER SLIT1MICRONS STB STEP Hand Controller Key ABORT SHIFT 1 CALIB FILTER SHIFT LABEL GO WAVE GRAT SHIFT LABEL LINES SHIFT LABEL LINES SHIFT LABEL LINES LOCAL SHUTTER 1 STEP UP SHIFT UNITS MMS260i 1 4M IMAGING SPECTROGRAPHS 52 16 6 DETAILED COMMAND REFERENCE This section describes the exact syntax acceptable parameters and functionality for every MS260i Command For each corresponding Query in braces type of Response expected is also listed Where appropriate the corresponding Hand Controller key in brackets is also listed Finally there are some warnings
32. are The Hand Controller is a very convenient option in locations where security is a concern such as defense facilities and universities There is no need to memorize commands or key sequences The 24 keys are clearly labeled with functions like Shutter Go Wave and Filter The backlit LCD display provides information on the grating selection grating line density active filter position current wavelength and shutter status Using the Hand Controller is intuitive and provides access to nearly all the functionality of the spectrographs and monochromators The hand controller comes with a 14 foot 4 3 meter long cable Hand Controller commands are listed in the Appendix of this user s manual The photograph shown here illustrates the hand controller with Oriel s CS260 monochromator The connection to the MS260i spectrograph is identical Figure 25 74009 Hand Controller MMS260i 1 4M IMAGING SPECTROGRAPHS 35 10 3 TRACQ BASIC SOFTWARE Oriel s optional TracQ Basic Data Acquisition and Radiometery Software is an instrument control package that includes data acquisition and processing TracQ Basic allows users to acquire spectroscopic measurement data quickly and easily without requiring any programming knowledge TracQ Basic enables users to acquire basic voltage measurements or use the built in algorithms for spectroscopic measurements Data acquisition and processing occurs in real time TracQ Basic is an application inte
33. as XXX XXX Warning this value is used to calculate wavelength motion Factor is usually changed only when installing a new grating and in that case the parameter should match the value provided by Oriel MMS260i 1 4M IMAGING SPECTROGRAPHS 54 GRAT2FACTOR XXX XXX GRAT2FACTOR Sets the calibration factor of grating 2 to the numeric parameter specified as XXX XXX Warning this value is used to calculate wavelength motion Factor is usually changed only when installing a new grating and in that case the parameter should match the value provided by Oriel GRATSFACTOR XXX XXX GRAT3FACTOR Sets the calibration factor of grating 3 to the numeric parameter specified as XXX XXX Warning this value is used to calculate wavelength motion Factor is usually changed only when installing a new grating and in that case the parameter should match the value provided by Oriel GRAT1OFFSET XXX XXX GRAT1OFFSET Sets the calibration offset for grating 1 as the floating point parameter specified XXX XXX Warning this value is used to calculate wavelength motion Offset is usually changed only when installing a new grating and in that case the parameter should match the value provided by Newport This value is automatically changed via the CALIBRATE command A calibration procedure is outlined in this user s manual GRAT2OFFSET XXX XXX GRAT3OFFSET Sets the calibration offset for grating 1 as the floating point parameter specified i
34. atic grating filter fr eeu RARA p ieee ape ad Filter Wheel Current Filter FilterLabel change the label Et B PED wavelength stepping 2 2 CGA 305 Press in apply ft Press ESC to reset ature Output Port Current Outport Shutter AXIAL PORT C E OPEN Filter Wheel 2 Current Filter 2 Filter Label 2 Start Wavelength 01 05 2015 03 24 15 Operation Complete End Wavelength C COPYRIGHT 2014 Newport Corporation Oriel Instruments Division All rights reserved Interval Wavelength Delay ms Present Wavelength Calibrate Wavelength 750 000 Displaying Properties for Grating 1 Grating Factor 0 999270 Grating Offset 0 612396 Grating Blaze 750 Figure 30 Entering Calibration Values in Utility Software MMS260i 1 4M IMAGING SPECTROGRAPHS 42 12 2 GRATING TURRET POSITION ERROR The photo below shows the inside of a MS260i spectrograph Normally two or three gratings are mounted on the rotating turret They are not shown in the photo for clarity The instrument senses the turret s angle of rotation based on a sensor A small pin mounting just under the turret is seen by the sensor The pin position may shift to a location where it cannot be picked up by the sensor when the instrument is turned on This may be due to a sudden power outage inadvertently toggling the power switch very rapidly or entering an
35. ation or tampering or d considered a consumable item or an item requiring repair or replacement due to normal wear and tear MMS260i 1 4M IMAGING SPECTROGRAPHS 73 DISCLAIMER OF WARRANTIES EXCLUSIVE REMEDY THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXCEPT AS EXPRESSLY PROVIDED HEREIN NEWPORT MAKES NO WARRANTIES EITHER EXPRESS OR IMPLIED EITHER IN FACT OR BY OPERATION OF LAW STATUTORY OR OTHERWISE REGARDING THE PRODUCTS SOFTWARE OR SERVICES NEWPORT EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FOR THE PRODUCTS SOFTWARE OR SERVICES THE OBLIGATIONS OF NEWPORT SET FORTH IN THIS SECTION SHALL BE NEWPORT S SOLE LIABILITY AND BUYER S SOLE REMEDY FOR BREACH OF THE FOREGOING WARRANTY Representations and warranties made by any person including distributors dealers and representatives of Newport Corporation which are inconsistent or in conflict with the terms of this warranty shall not be binding on Newport unless reduced to writing and approved by an expressly an authorized officer of Newport 20 6 LOANER DEMO MATERIAL Persons receiving goods for demonstrations or temporary use or in any manner in which title is not transferred from Newport shall assume full responsibility for any and all damage while in their care custody and control If damage occurs unrelated to the proper and warranted use and performance of the goods recipient of the goods acce
36. beam stray light increases and throughput of desired signal suffers To illustrate this concept the photos below show a fiber optic cable placed at the entrance of a spectrograph Fibers are typically F 2 The Oriel model 77529 may be used to match the F to the spectrograph WITHOUT F MATCHER TO COLLIMATING MIRROR AND GRATING FIBER FIXED OPTIC SLIT ADAPTER ASSEMBLY STRAY FIBER LIGHT WITH QUICK E CONNECT INPUT MIRROR FERRULE STRAY LIGHT ACCEPTANCE ANGLE OF MONOCHROMATOR SPECTROGRAPH Figure 21 Mismatched F Numbers Resulting in Stray Light WITH F MATCHER TO COLLIMATING MIRROR AND GRATING F MATCHER N N i N INPUT MIRROR N N FIBER WITH QUICK SLIT SLIT CONNECT FERRULE ASSEMBLY Figure 22 F Number Matcher Used with Fiber Optic Cable MMS260i 1 4M IMAGING SPECTROGRAPHS 31 9 BLOCKING HIGHER ORDER RADIATION Detailed information regarding grating physics can be found in the Appendix of this user s manual A summary of grating physics is noted here 9 1 e Only wavelengths that satisfy the grating equation pass through the output port of the instrument The remainder of the light is scattered and absorbed inside the instrument The grating is rotated to bring different wavelength regions of light in line with the output A grating creates interference patterns when light is shown onto it Different wavelengths interfere a
37. before installing or operating this system If there are any questions or concerns contact Oriel Instruments or the regional sales representative for Newport ELECTRICAL SHOCK Never attempt to open the lamp power supply or spectrograph power adapter These items do not contain any user serviceable parts Failure to follow this warning can result in severe injury or death The spectrograph s power adapter connects to an AC wall socket and supplies DC voltage to the instrument Do not open the spectrograph cover and attempt to work inside without first turning the instrument off and disconnecting the power cord from the AC mains The spectrograph provides power to the filter wheel and allows the user to select which filter is placed in the optical path Ensure the spectrograph power switch is in the off position marked as O Then connect the power adapter to the spectrograph as shown Insert the power cord provided into the power adapter and connect to the AC mains Connect the USB RS232 or GPIB cable to the spectrograph If using the computer s USB port plug the other end of the USB cable into the computer only after the TracQ Basic software is installed MMS260i 1 4M IMAGING SPECTROGRAPHS 14 Figure 4 Spectrograph Connections The USB models of the MS260i each include a USB 2 0 cable A GPIB cable model 70038 and RS232 cable model 70040 are available from Oriel ordered separately If using a commercially ava
38. ble damage Always wear powder free gloves that cover the entire hand not finger cots Never touch the surface of a diffraction grating even when wearing gloves Dust or debris on the grating surface may negatively impact performance so it should be prevented from entering the instrument by keeping the protective grating covers in place when it is not in use If the gratings do require cleaning do not attempt to clean any optical surface except by blowing off dust or lint particles with a stream of dry clean air or nitrogen Wiping the grating surface will cause permanent damage Avoid getting any moisture or condensation onto the grating Do not breathe on or talk directly in front of a grating as the moisture from one s breath should never be allowed to condense on the grating surface This instrument comes with gratings pre installed aligned and the calibration parameters set An experienced user may choose to install a different grating in the field although it is strongly encouraged to send the instrument back to the factory instead If a grating is installed in the field the grating cover must never touch the grating s front surface The specially designed grating cover contacts only the edges of the grating When removing this cover a grating can be scratched easily so use extreme caution when handling Hand tighten the grating mount screws Do not use tools since this may cause damage to the drive assembly Never touch the surfac
39. connections made Ensure that there is easy access to the spectrograph s power switch and the electrical outlet MMS260i 1 4M IMAGING SPECTROGRAPHS 12 3 4 MOUNTING OPTIONS The ability to mount the spectrograph simplifies setup and alignment of the optical system The mounting plate or kits also helps ensure consistent results over time as the spectrograph cannot be accidentally moved out of position The following options are available for securing the MS260i e Mounting plate e Mounting kit to couple with Oriel s Research Lamp Housings e Optical rods The 74105 Mounting Plate is used to secure a MS260i Spectrograph to an inch or metric optical table The plate adds 0 25 inch 6 35 mm to the optical height If the MS260i will be used with Oriel s research lamp housing consider using the 74104 mounting kit The 74104 Mounting Kit connects the MS260i spectrograph to an arc lamp or quartz tungsten halogen light source This kit is compatible with Oriel s Research Lamp Housings that hold 50 to 250 watt lamps It includes a base plate a flexible light shield a 1 5 inch diameter focusing lens and lens holder All the hardware required to mount the lamp housing and spectrograph to the base plate is provided The mounting kit s base plate uses four adjustable leveling feet The feet may be removed to secure the base plate to an inch or metric optical table The most economical option is to use optical rods and rod holders to mount the M
40. ctor is mounted at the axial output port where an adapter is installed to mount the Oriel LineSpec detector at the optical plane The LineSpec detector may be ordered separately or the adapter port removed by the end user for installation of a custom adapter Note If it is desired to use this instrument as both a monochromator and spectrograph dual output port instrments are available where the lateral output port features a slit identical to the one located at the input port The slits should be the same width and height at the input and output ports A wider input slit when compared to the output slit results in more stray light inside the instrument A wider output slit with respect to the input slit will not increase throughput 5 1 FIXED SLIT HOLDER AND FIXED SLITS The fixed slits slide into the holders at the input and optional lateral output port The width and height cannot be adjusted but may be individually replaced with other slit sizes Fixed slits are a low cost alternative to micrometer adjustable or motorized slits and provide excellent repeatability They are a good choice when only a few slit sizes are required Fixed slits are sold separately to allow customized choices based on the needs of the application When ordering an instrument with a fixed slit holder be sure to purchase one fixed slit for single output port instruments When ordering a dual output port instrument be sure to purchase two fixed slits of the same model
41. e an error code in the status byte i e status byte not equal to 0 Moreover the status byte must be explicitly read It is not returned after general Statements Correct Statements are handled as follows Commands Under RS 232 Statements are echoed back to the PC Thus after sending a Command you should read back this echo There is no further response to a Command Example Send GOWAVE 500 If Response GOWAVE 500 If Under IEEE 488 and USB there is no echo There is no automatic response to a Command Example Send GOWAVE 500 If Response none Queries Under RS232 Statements are echoed back to the PC Additionally there will be an explicit response to that query Thus after sending a Query the echo and the answer should be read back together Example Send Response WAVE If 500 cr If Under IEEE 488 and USB there is no echo Thus the Response can be read back by itself Example Send Response 500 cr If MMS260i 1 4M IMAGING SPECTROGRAPHS 50 16 4 HANDSHAKE MODE This communications mode is most useful for methods development troubleshooting or in the early stages of programming Use the command HANDSHAKE 1 If to put the MS260i into Handshake Mode This mode follows the command syntax listed in this manual but in addition every Statement is acknowledged The nandshake that received is the status byte The MS260i stores errors internally in a status byte and
42. e contact Oriel Instruments or the representative through whom the system was purchased MMS260i 1 4M IMAGING SPECTROGRAPHS 6 1 1 SYMBOLS AND DEFINITIONS WARNING Situation has the potential to cause bodily harm or death CAUTION Situation has the potential to cause damage to property or equipment ELECTRICAL SHOCK Hazard arising from dangerous voltage Any mishandling could result in irreparable damage to the equipment and personal injury or death EUROPEAN UNION CE MARK The presence of the CE Mark on Newport Corporation equipment means that it has been designed tested and certified as complying with all applicable European Union CE regulations recommendations WEEE This symbol on the product or on its packaging indicates that this product must not be disposed of with regular waste Instead it is the user s responsibility to dispose of waste equipment according to the local laws The separate collection and recycling of the waste equipment at the time of disposal will help to conserve natural resources and ensure that the materials are recycled in a manner that protects human health and the environment ON The ON symbol in the above figure indicates the ON position of the power switch OFF The OFF symbol in the above figure indicates the OFF position of the power switch MMS260i 1 4M IMAGING SPECTROGRAPHS 7 1 2 GENERAL WARNINGS 1 3 Read all warnings and operating instructions for this s
43. e of the grating even while wearing gloves Handle the grating assembly only by its mount MMS260i 1 4M IMAGING SPECTROGRAPHS 9 2 INTRODUCTION The Oriel MS260i is a high performance economical and user friendly imaging spectrograph an ideal instrument for research and OEM applications Each of these instruments includes up to three diffraction gratings filter wheel control circuitry and an integrated electronic shutter Communication may be established using USB RS232 GPIB IEEE 488 or an optional hand controller designed specifically for use with the MS260i family of spectrographs The MS260i includes a utility program designed to run on a computer using the Microsoft Windows operating system The simple intuitive interface means that users can get up and running within minutes of opening the box Instrument control examples using National Instruments LabVIEW are provided along with a command set and API for those wishing to develop their own programs An optional hand controller may be used for quick access to all common commands and queries without requiring a computer This is especially beneficial in universities and secure facilities Please note that the utility software controls only the spectrograph and does not acquire data from the camera connected to the instrument s output port A wide selection of preconfigured grating selections are available for the MS260i as well as special order options Throughput and reso
44. e shutter by pressing this button The shutter position is shown in the display as OPN for open and CLS for closed MMS260i 1 4M IMAGING SPECTROGRAPHS 60 SHIFT PORT FILTER SHIFT LABEL LOCAL SHIFT UNITS SHIFT 1 To change the port press this key Followed by either 1 or 2 and then press ENTER The number 1 corresponds to the axial port and the number 2 corresponds to the lateral output port Move the 74010 Filter Wheel accessory to the specified position Press FILTER then type the number 1 2 3 4 5 or 6 indicating the desired position then finally press ENTER to execute the move This key located directly above FILTER provides access to the filter label These labels are eight character alpha numeric fields used for information only You can use the keypad to type any number then press ENTER to accept that new value The Hand Controller display only shows the first four digits of the label and you can only enter numbers Use this key to toggle between local communication through the Hand Controller and remote communication with a computer Please note that if you press LOCAL to activate the Hand Controller the display is lit and information fills the screen you also lock out PC communications You cannot command the MS260i via either RS 232 IEEE 488 or USB while the Hand Controller is active To change the wavelength units press this key followed by either 1 2 or 3 and then press ENT
45. echnical support and service inquiries A list of worldwide representatives can be found on the following website http www newport com oriel MMS260i 1 4M IMAGING SPECTROGRAPHS 71 20 2 REQUEST FOR ASSISTANCE SERVICE Please have the following information available when requesting assistance or service Contact information for the owner of the product Instrument model number located on the product label Product serial number and date of manufacture located on the product label Description of the problem To help Newport s Technical Support Representatives diagnose the problem please note the following Is the system used for manufacturing or research and development What was the state of the system right before the problem Had this problem occurred before If so when and how frequently Can the system continue to operate with this problem or is it non operational Were there any differences in the application or environment before the problem occurred 20 3 REPAIR SERVICE This section contains information regarding factory service for this product The user should not attempt any maintenance or service of the system beyond the procedures outlined in this manual This product contains no user serviceable parts other than what is noted in this manual Any problem that cannot be resolved should be referred to Newport Corporation If the instrument needs to be returned for service a Return Material Authorization RM
46. ed for sending low level commands to the spectrograph This is very convenient for assisting programmers in their software development efforts and helps to coordinate operations with various third party cameras The MonoTERM utility software was developed in National Instruments LabVIEW It s open source code so it may be used to provide LabVIEW programming examples The MonoTerm software is included on the memory stick provided with the instrument FIEL INSTRUMENTS A Newport Corporation Brand command string to send t ads Send response string 2 400 1600 e some C COPYRIGHT 2013 Newport Corporation Oriel Instruments Division rights reserved Figure 27 Query Using MonoTerm Software MMS260i 1 4M IMAGING SPECTROGRAPHS 37 11 GRATING INSTALLATION AND CALIBRATION Grating installation and field calibration are typically performed at one of Newport s manufacturing location or by qualified field service personnel The instructions provided in this section are for advanced users only 11 1 RECALIBRATION SERVICES Newport suggests that spectrographs be returned annually for service In addition to verifying the calibration the instrument also undergoes full inspection Any refurbishment required such as fresh lubrication on the worm gear would be included during the recalibration of the instrument 11 2 SETTING THE WAVELENGTH OFFSET A wavelength offset is used to shift the wavelength positio
47. ed slit holders at the input port and optional output port s e Oriel LineSpec CCD detector adapter flange at axial output port e Achoice of electronics interface for GPIB RS232 or USB communication LabVIEW based utility software e Application Programming Interface API for LabVIEW with examples e MonoTerm low level command software e Certificate of Calibration e Spectrograph Power Supply e Line cords U S and European Users manual 3 2 UNPACKING Remove all items from the shipping containers and verify each item is accounted for The instrument is carefully packaged to minimize the possibility of damage during shipment Inspect the shipping box for external signs of damage or mishandling Inspect the contents for damage If any item is missing or damaged immediately contact Oriel Instruments or the Newport representative from whom the system was purchased It is suggested to save the packaging material and shipping container in case the equipment needs to be relocated at a future date WARNING Do not attempt to operate this equipment if there is evidence of shipping damage or there is suspicion that the equipment will not operate correctly Damaged equipment may present hazards 3 3 CHOOSING A LOCATION Choose an installation location where the power requirements can be met for the spectrograph as well as the rest of the optical system Be sure power is not applied to the system until the setup has been completed and all electrical
48. ency is more useful than one with lower efficiency in measuring weak transition lines in optical spectra A grating with high efficiency may allow the reflectivity and transmissivity specifications for the other components in the spectrometer to be relaxed Moreover higher diffracted energy may imply lower instrumental stray light due to other diffracted orders as the total energy flow for a given wavelength leaving the grating is conserved being equal to the energy flow incident on it minus any scattering and absorption Control over the magnitude and variation of diffracted energy with wavelength is called blazing and it involves the manipulation of the micro geometry of the grating grooves The energy flow distribution by wavelength of a diffraction grating can be altered by modifying the shape of the grating grooves The blaze wavelength is the wavelength where the grating efficiency is enhanced by shaping the grating grooves Although holographic gratings are not shaped like ruled gratings the peak grating efficiency wavelength is also referred to as the blaze wavelength The choice of an optimal efficiency curve for a grating depends on the specific application Often the desired instrumental efficiency is linear that is the intensity of light transformed into signal at the image plane must be constant across the spectrum To approach this as closely as possible the spectral emissivity of the light source and the spectral response of the d
49. ended Range and Wide Bandpass Models 24 Figure 18 Resolution vs 26 Figure 19 Acceptance Pyramid of 29 Figure 20 Grating Correctly Filled with 29 Figure 21 Mismatched Numbers Resulting in Stray Light 30 Figure 22 F Number Matcher Used with Fiber Optic 30 Figure 23 Model 74010 Filter Wheel 32 Figure 24 Mono Utility Software 33 Figure 25 74009 Hand 34 Figure 26 TracQ Basic 35 Figure 27 Query Using MonoTerm 36 Figure 28 Grating Platform Without 40 Figure 29 Grating Platform With Three Gratings 40 Figure 30 Entering Calibration Values in Utility Software 41 Figure 31 Grating Turret Position Sensor Pin 42 Figure 32 5260
50. er wheel may be mounted to the male flange of the spectrograph slit or slit holder The filters are mounted external to the spectrograph Thus the refractive index and thickness of the filters do not significantly affect the focal distance to the collimating mirror inside the spectrograph With internal filters this distance would be different for every wavelength and every filter and would therefore adversely affect resolution The MS260i is designed and manufactured to have errors of only a fraction of a millimeter in the focal distance Positioning the filters externally usually before the input slit has only a slight effect on the light throughput Since the slit acts as a secondary source the focal distance is not affected Figure 23 Model 74010 Filter Wheel MMS260i 1 4M IMAGING SPECTROGRAPHS 33 10 1 UTILITY SOFTWARE LabVIEW based utility software is included at no extra cost with all MS260i models to control both the spectrograph gratings and optional motorized filter wheel The MonoTerm software provided with the spectrograph includes USB drivers for Windows 7 32 bit and 64 bit operating systems The software can also control the instrument through an RS232 or GPIB connection Please refer to the Quick Start Guide provided with the spectrograph for instructions on installation and use Mono Utility FTL for Cornerstone Series Monochromator A Newport Corporation Brand Grating Filter Port Calibration S
51. ete that character ORIEL INSTRUMENTS BEA Figure 35 74009 Hand Controller Keypad MMS260i 1 4M IMAGING SPECTROGRAPHS 59 17 3 KEY REFERENCE These commands are listed based on the key locations from the top of the controller to the bottom left to right ABORT STEP DOWN STEP UP GO WAVE GRAT SHIFT LABEL LINES SHIFT CALIB SHUTTER If you accidentally press a function key or enter a bad parameter you may press the ABORT key to clear that command before it executes The ABORT key has no effect on most functions once the command is executed by pressing ENTER However wavelength motion will stop immediately upon ABORT and the display will update to show the wavelength where motion was halted Press this key once to move the MS260i to shorter wavelengths by the smallest possible increment Holding this key causes rapid single stepping toward lower wavelengths Press SHIFT and then STEP DOWN you can use the keypad to define a number of steps to move at once Press ENTER to execute this larger move Press this key once to move the MS260i to higher wavelengths by the smallest possible increment Holding this key causes rapid single stepping toward higher wavelengths Press SHIFT and then STEP UP you can use the keypad to define a number of steps to move at once Press ENTER to execute this larger move This key induces wavelength motion to a specified position Press GO WAVE then use the keypad to
52. etector should be considered from which the desired grating efficiency curve can be derived Usually this requires peak grating efficiency in the region of the spectrum where the detectors are least sensitive In many instances the diffracted power depends on the polarization of the incident light For completely unpolarized incident light the efficiency curve will be exactly halfway between the P and S efficiency curves Anomalies are locations on an efficiency curve efficiency plotted vs wavelength at which the efficiency changes abruptly These sharp peaks and troughs in an efficiency curve are sometimes referred to as Wood s anomalies The efficiency curves shown are relative not absolute and were measured using an in plane near Littrow configuration Please use the curves as a guide and not as absolute data Grating diffraction is dependent on the polarization of the radiation incident on the grating Software such as MonoTerm and Oriel s TracQ Basic may be configured to switch between gratings at a specific wavelength Typically the most efficient grating is selected so this switchover wavelength would be where the two efficiency curves meet To determine empirically the ideal switchover wavelength the output should be measured by an optical detector Run a scan in the crossover region using only Grating 1 Repeat the scan using only Grating 2 Where the detector readings are closest is the optimal switchover wavelength For a triple g
53. g this process ensure the other grating or gratings do not move They should be held in place using a free hand by grasping or pressing down on the remaining grating holder s Carefully uncover the new grating to be installed and set aside Use the cover from the new grating to protect the grating that was just removed Install the new grating onto the grating platform and ensure the new grating is parallel to the other gratings The grating should fit into a pin located on the platform Push the new grating up against the large central pin in the middle of the platform 12 Re install the long screws that held the previous grating in place Use only firm finger pressure to tighten them Do not tighten one completely while the other screw is loose It is best to alternate tightening between the two screws Ensure the screws line up parallel with the grating face Replace the cover on the spectrograph and secure using all screws provided Failure to use all hardware will result in increased stray light Connect the spectrograph to the electrical mains and switch on the power Follow the procedures outlined in this manual to determine the grating factor and any offset Use the Mono utility software to update the calibration parameters as needed It is suggested to verify the calibration factors and offsets of the other gratings that were not replaced as they may have accidentally been moved during this process MMS260i 1 4M IMAG
54. grating Oriel spectrographs with various detection instruments such as the Newport Optical Power and Energy Meters 1918 R 1936 R and 2936 R plus Oriel s LIDA SRS KIT Software prompts guide users through the measurement process Instruments are controlled and scan parameters are set up through simple intuitive dialog boxes The front panel of the software allows one to see instrument status present wavelength signal reading and the selected wavelength units Please note that the camera used with a spectrograph is an independent instrument that is not controlled by TracQ Basic TracQssc 5 EL i INSTRUMENTS Fa Present System Status Automatic Fiter Change Over Tal cm Figure 26 TracQ Basic Screens MMS260i 1 4M IMAGING SPECTROGRAPHS 36 10 4 LOW LEVEL COMMANDS An intuitive command set is provided for those wishing to create their own programming A list of these commands is provided in the user s manual included with the spectrograph Commands are simple to use For example to query the wavelength enter WAVE The command to close the shutter is SHUTTER C A full list of commands is available in the Appendix of this user s manual 10 5 MONO TERM SOFTWARE AND LABVIEW EXAMPLES For those users who are developing their own LabVIEW based programs an Application Programming Interface API document is included with the instrument The Oriel MonoTERM utility is also provid
55. he other wavelengths in higher orders may need to be blocked The input spectrum and detector sensitivity determine whether order sorting or blocking filters are needed POSITION OF GRATING NORMAL WHEN D D ANGLES THE GRATING ANGLE 6 IS POSITIVE THE ANGLE OF INCIDENCE IS 6 AND IS POSITIVE THE ANGLE OF DIFFRACTION D IS 6 AND IS POSITIVE THE ORDER IS sin 6 x cos AND IS POSITIVE Figure 40 Sign Convention for the Angle of Incidence Angle of Diffraction and Grating Angle MMS260i 1 4M IMAGING SPECTROGRAPHS 69 19 4 GRATING DISPERSION If we fix the angle in the grating equation and differentiate with respect to wavelength we get axcosDx D mx dA Thus SD axcosD D 0A is the angular dispersion or change of diffraction angle corresponding to a small change in wavelength It is greater for smaller groove spacing a greater number of lines per millimeter larger orders m and larger diffraction angles D The linear dispersion 6L 5A at a spectrograph s exit slit will vary with output focal length f and angle D and is the product of the focal length and angular dispersion oL 80 axcosD Normally we use the reciprocal linear dispersion which gives the wavelength dispersion in nm mm of slit width 19 5 GRATING ILLUMINATION AND RESOLUTION The resolving power of a grating is defined in terms of wavelengths A and A dA where A dA is the closest
56. he resolution for each grating As a general rule a grating with 1200 lines mm will have half the resolution value of a 600 line mm grating Please note that this equation is valid at the blaze wavelength of the grating and does not take into account the abberations present will narrow slits GRATING PROPERTIES Configuration Grating Reciprocal Dispersion 1 3 2 High Resolution 2 3 2 3 3 1 1 3 2 Holographic m 2 1 6 4 Extended Range 2 6 5 3 6 4 1 12 8 Wide Bandwidth 2 12 9 3 12 9 MMS260i 1 4M IMAGING SPECTROGRAPHS 29 8 GETTING LIGHT INTO A MONOCHROMATOR 8 1 ACCEPTANCE PYRAMID The figure below shows the optical path of the light input to the instrument The spectrograph has an acceptance pyramid often described by an F The position and dimensions of the internal optics determines the pyramid The optical equivalent is a grating image located behind the slit as shown in below Only light that passes through the slit in the direction of this grating image is useful Always fill the acceptance pyramid of the instrument with light IMAGE OF x GRATING CE ACCEPTANCE PYRAMID Figure 19 Acceptance Pyramid of Spectrograph Figure 20 Grating Correctly Filled with Light MMS260i 1 4M IMAGING SPECTROGRAPHS 30 8 2 F NUMBER MATCHING The MS260i spectrograph is an F 3 9 instrument Without matching the F of the incoming light
57. iel s monochromators and spectrographs P polarized radiation has the polarization axis parallel to the entrance slit In most laboratory applications with the instrument sitting on its mounting surface on a horizontal bench or optical table P polarized radiation is vertically polarized Note this definition of S and P polarization for diffraction gratings does not follow the general rules for S and P polarization for optics where the plane of incidence rather than the grooves are used to define parallel and perpendicular The graphs for the MS260i configurations have one efficiency curve per grating This is representative of 45 degree polarization which is the average of the P polarization and S polarization efficiency curves Typically the efficiency curve for P polarized light peaks slightly lower than the nominal blaze wavelength and smoothly declines to 096 at about three times the blaze wavelength The curves for P polarization are generally smooth without dramatic changes in direction or sharp features The curves for S polarized light peak slightly above the nominal blaze wavelength and decline However the efficiency can recover dramatically and show good efficiency over a broader wavelength range The S polarization curves can show sharp features anomalies which complicate data deconvolution from spectral scans If a source is being measured close to an anomaly then the real feature may be dramatically distorted If possible
58. iency 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 Wavelength nm The efficiency curves above are relative not absolute and were measured using an in plane near Littrow configuration Please use the curves as a guide and not as absolute data Grating Efficiency Curves MS260i Imaging Spectrograph Wide Bandpass Configuration Grating 1 74072 Grating 2 74073 Grating 3 74074 Efficiency 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Wavelength nm The efficiency curves above are relative not absolute and were measured using an in plane near Littrow configuration Please use the curves as a guide and not as absolute data Figure 17 Grating Efficiency Curves Extended Range and Wide Bandpass Models MMS260i 1 4M IMAGING SPECTROGRAPHS 25 6 3 POLARIZATION EFFECTS The diffraction efficiency from a grating usually depends on the polarization of the radiation incident on the grating There can be significant differences between the efficiency for radiation with the electric field vector parallel to the grating grooves and radiation with the electric vector perpendicular to the grooves Radiation with the electric vector restricted to a specific direction is linearly polarized Linearly polarized radiation with the electric vector parallel to the grooves is P polarized Radiation polarized perpendicular to the grooves is S polarized For Or
59. ilable USB GPIB or USB RS232 converter cable the driver for the cable must be installed before communication to the spectrograph can be established This driver is available from the manufacturer of the cable Follow the instructions provided in the Quick Start Guide to install the utility software onto a computer The software is named MonoTerm The utilty software instructions apply to the MS260i as well as the Cornerstone 130 and Cornerstone 260 monochromator families MMS260i 1 4M IMAGING SPECTROGRAPHS 15 4 SHUTTER An electronic shutter is integrated into spectrograph s design It is mounted inside the housing at the input port This shutter is normally closed The shutter is used to close the light path when light is not required This allows the light source to remain on and therefore remain warmed up so that it continues to provide stable performance Additionally restarting a lamp results in wear of the filament with quartz tungsten halogen lamps or wear of the anode cathode with arc lamps Therefore when the light is not needed during short periods closing the shutter is suggested Diffraction gratings are mounted on a rotating turret inside the spectrograph When the spectrograph switches between diffraction gratings the changing angle of the grating causes light to be diffracted at various wavelengths This includes white light which is output at a higher power than other individual wavelengths In order to prevent
60. incorrect calibration value most often a decimal point error To correct this situation the shaft with the worm gear attached needs to be manually rotated to bring this pin back to its normal operating range The normal operating range is shown in green in the photo below Be sure to turn off the spectrograph and unplug it prior to performing this procedure Take all necessary precautions outlined in this user s manual to ensure the optics are not damaged through inadvertent contact Figure 31 Grating Turret Position Sensor Pin Range MMS260i 1 4M IMAGING SPECTROGRAPHS 43 13 SPECIFICATIONS General Specifications Usable Wavelength Range Focal Length 257mm F F 3 9 Wavelength Selection Motorized 180 to 2500 nm grating dependent Spectral Resolution Spatial Resolution Grating dispersion and slit width dependent 50 um FWHM Input Ports Output Ports Wavelength Accuracy 0 35 nm Wavelength Precision 0 08 nm Maximum Slew Rate 205 nm s with 1200 line mm grating Horizontal Magnification 1 1 Vertical Mangification 1 6 1 input port expandable to two input sources using optional 77765 Beam Steerer Axial all models and Lateral dual port models External Shutter Control BNC connector normally closed TTL low or short opens shutter Shutter minimum exposure 0 25 Shutter maximum repetition 0 5 Hz Motorized Filter Wheel Filter Wheel Model 7
61. label for that grating For example 1 1200 BLUE cr If GRATILABEL TTTTTTT GRAT1LABEL SHIFT LABEL Sets the user defined label for the grating 1 to the lt 9 character parameter TTTTTTTT The parameter can letters or numbers This label is for informational purposes only Oriel uses these labels to indicate blaze wavelength for those gratings that are installed in the MS260i at the factory Note that the Hand Controller only displays four characters however all eight may be entered Also the Hand Controller only changes the current grating parameters GRAT2LABEL TTTTTTT GRAT2LABEL SHIFT LABEL Sets the user defined label for the grating 2 to the lt 9 character string parameter TTTTTTTT The parameter can letters or numbers This label is for informational purposes only Oriel uses these labels to indicate blaze wavelength for those gratings that are installed in the MS260i at the factory Note that the Hand Controller only displays four characters however all eight may be entered Also the Hand Controller only changes the current grating parameters GRATSLABEL TTTTTTT GRAT3LABEL SHIFT LABEL Sets the user defined label for the grating 3 to the lt 9 character string parameter TTTTTTTT The parameter can letters or numbers This label is for informational purposes only Oriel uses these labels to indicate blaze wavelength for those gratings that are installed in the MS260i at the factory
62. lits Comm Present Wavelength nm Grating Number Current Grating Grating Blaze Grating Lines 1 750 600 Set Wavelength 546 000 Automatic grating filter 7 ind output port featu i i zT 5 aa ad Filter Wheel 1 Current Filter FilterLabel oo oe the label wavelength stepping 2 2 CGA 305 Press Enter to apply feature Press ESC to reset Filter Wheel 2 Current Filter 2 Filter Label 2 T AXIAL PORT C M Start Wavelength 01 05 2015 03 24 15 Operation Complete End Wavelength C COPYRIGHT 2014 Newport Corporation Oriel Instruments Division All rights reserved Interval Wavelength Abort Scan Delay ms Fy Auto Table Sett gt af E Filter Control Menu Automatic Filter Change Over Wavelength Table Grating Control Menu Automatic Grating Change Over Wavelength Table at wavelength 305 00 Figure 24 Mono Utility Software Screens MMS260i 1 4M IMAGING SPECTROGRAPHS 34 10 2 HAND CONTROLLER The optional 74009 Hand Controller is designed specifically for use with MS260i imaging spectrographs and Oriel s Cornerstone series monochromators It is very easy to set up simply plug it into the instrument and it s ready to go There is no need to purchase a computer and set up the softw
63. lution can be adjusted by selecting the appropriate slit size Fixed slits are available for high accuracy and repeatability and micrometer adjustable slits may be used for maximum flexibility Automatic bandpass control is available with the use of motorized slits 2 4 OPTICAL CONFIGURATION The optical design of the MS260i is based upon an asymmetrical in plane version of a Czerny Turner spectrograph The optical configuration is designed to ensure high resolution and maximum throughput This F 3 9 spectrograph is optimized to provide excellent stray light rejection while minimizing aberrations A high precision motor is used to select the desired wavelength and switch between diffraction gratings quickly without sacrificing performance ENTRANCE ES LATERAL EXIT V B Y OPTIONAL AXIAL OUTPUT EXIT MIRROR Figure 1 Optical Configuration of the MS260i MMS260i 1 4M IMAGING SPECTROGRAPHS 10 2 2 2 3 STRAY LIGHT REJECTION Stray light may have a variety of origins Its presence may be caused by a wide variety of design and manufacturing factors The level of stray light due to the dispersed radiation inside the spectrograph is affected by the design of the instrument its baffles and interior finish The MS260i incorporates a sophisticated design proven materials and a quality manufacturing system to ensure high stray light rejection The amount of stray light measured on top of true signal will depend on man
64. lychromatic light is incident on a grating then the light is dispersed so that each wavelength satisfies the grating equation Positive orders have been eliminated from the illustration for clarity In most spectrographs the input slit and collimating mirror fix the direction of the input beam that strikes the grating The focusing mirror and exit slit fix the output direction Only wavelengths that satisfy the grating equation pass through the exit slit The remainder of the light is scattered and absorbed inside the spectrograph As the grating is rotated the angles and D change although the difference between them remains constant and is fixed by the geometry of the spectrograph A more convenient form of the grating equation for use with spectrographs is m 2xaxcos x sin Where q Half the included angle between the incident and the diffracted ray the grating 0 Grating angle relative to the zero order position These terms are related to the incident angle and diffracted angle D by 1 06 gandD 0 m 4 MONOCHROMATIC m 3 LIGHT m 0 m 1 m 2 Figure 38 The Grating Equation Satisfied for a Parallel Beam of Monochromatic Light WHITE LIGHT 4 SHORTEST WAVELENGTH TRANSMITTED 180 nm m 1 FOR MOST SYSTEMS de INCREASING WAVELENGTHS 360 nm 1st ORDER na AND 180 nm 2nd ORDER ORDERS OVERLAP TAS SHORT WAVE CUT OFF FILTER IS INSERTED IN BEAM Figure 39 Polychromatic Light Diffracted Fro
65. m a Grating MMS260i 1 4M IMAGING SPECTROGRAPHS 68 19 3 GRATING ORDER It is important to note the sign of is given by either form of the grating equation and can positive or negative In a spectrograph the angles and D are determined by the rotational position of the grating We use the sign convention that all angles that are counter clockwise from the grating normal are positive and all angles that are clockwise to the grating are negative See Fig 4 The incident light diffracted light and grating rotation can be at positive or negative angles depending on which side of the grating normal they are The half angle is always regarded as positive If the angle D is equal to and of opposite sign then the grating angle and order are zero and the light is simply being reflected If the grating angle is positive then the order is positive m 1 if the grating angle is negative then the order is negative m 1 The half angle of the Cornerstone 130 is 5 1 and the orders are positive With Oriel s MS260i spectrographs the half angle is 11 83 and the orders are positive The grating equation is also satisfied for wavelengths in higher orders when m is gt 1 Therefore A2 A1 2 for m 2 A1 3 for m 3 etc The wavelength A2 is in the second order and is in the third order etc Again this concept is illustrated on the previous page Usually only the first order positive or negative is desired T
66. n XXX XXX Warning this value is used to calculate wavelength motion Offset is usually changed only when installing a new grating and in that case the parameter should match the value provided by Oriel This value is automatically changed via the CALIBRATE command A calibration procedure is outlined in this user s manual GRATSOFFSET XXX XXX GRAT2OFFSET Sets the calibration offset for grating 3 as the floating point parameter specified in XXX XXX Warning this value is used to calculate wavelength motion Offset is usually changed only when installing a new grating and in that case the parameter should match the value provided by Oriel This value is automatically changed via the CALIBRATE command A calibration procedure is outlined in this user s manual GRAT1ZERO XXX XXX GRAT1ZERO Sets the zero parameter for grating 1 as the floating point parameter specified in XXX XXX Warning this value is used to calculate wavelength motion Zero is usually changed only when changing the instrument from a double grating configuration to triple grating configuration or visa versa The value for a double grating configuration is 0 0875665 For a triple grating configuration the value is 0 0872665 Please note that this instrument may hold one two or three gratings The configuration indicates the maximum number of gratings that may be potentially installed This is dependent on the style of mount the grating is bonded to GRAT2ZERO XXX XXX
67. n to either a higher or a lower wavelength For example if a HeNe laser operating at 632 8 nm is sent through the spectrograph and the output is visible when the spectrograph is set to 640 nm an offset can be introduced When performing this procedure it is necessary to use a light source with a known spectral line appearing within the operating range of the grating Oriel offers a number of pencil calibration lamps for this purpose such as the model 6035 Hg lamp Another line source such as a laser may also be used Always be sure to follow the appropriate safety precautions when dealing with any light source Procedure 1 Select a radiation source that has at least one narrow spectral line in the wavelength region of interest Select a detector with an operating range appropriate for the spectral line Focus the radiation onto the entrance slit the spectrograph is F 3 9 Note that a narrower slit provides greater resolution Ensure the focused beam is parallel to the spectrograph s optical axis 5 Command the spectrograph to select the grating for which the offset is to be applied to 6 Use the STEP command to move the grating position until the spectral line is visible at the output 7 Use the CALIBRATE command to enter the exact wavelength of the spectral line The MS260i wavelength offset has now been entered into memory This offset applies to all other wavelength positions when using this grating 8 Repeat the proces
68. nder Verify the DLL is in the same folder or in command path of executable before running Summary Add Oriel USB h Cornerstone dll and CyUSB dll to project Add Oriel USB h to include in header file of project Create class object with COriel_ USB myDevice Call functions in DLL such as write myDevice Send strCommand Functions Defined in class char GetLibraryVersion void INT32 Send const char strCommand INT32 Read LPSTR strReturn INT32 Query const char strCommand char strReturn Sample Query code void OnBtnQuery CString strCommand CString strCommunication char strPass 256 char strReturn 1024 Command to send GetDlgltemTextW cntiCommand strCommand strcpy_s strPass CStringA strCommand GetString strcpy_s strReturn LPSTR pstrReturn strReturn Response variable Query instrument INT32 bSuccess myDevice Query strPass pstrReturn if DSuccess strCommunication Append CString strReturn strCommunication Append L Attempting Read Failed History SetWindowTextW strCommunication MMS260i 1 4M IMAGING SPECTROGRAPHS 66 19 APPENDIX IV GRATING PHYSICS TUTORIAL 19 1 THE GRATING EQUATION A typical diffraction grating consists of a substrate usually of an optical material with a large number of parallel grooves ruled or replicated in its surface and overcoated with a reflecting material such as aluminum The quality and spacing of the gro
69. ntrolled through the utility software optional hand controller optional TracQ Basic software or by using low level commands An advantage of using the motorized slit is that in addition to setting a specific slit width the software may be configured to an automatic bandpass setting The software then adjusts the slit width to maintain the chosen bandpass as scans are performed using multiple gratings The mathematics involved in determining the slit width takes into account the input and output focal lengths of the instrument s design as well as the angle of the grating at the specified wavelength Please note that a motorized slit is not available for use at the lateral output port of the MS260i Figure 12 A Motorized Slit Ltj Slits Width and Banc Slits Control Manual Automatic Bandpass 9 Setting Bandpass to zero or changing Slit Auto Bandpass Width manually turns automatic slit 200 nm adjustment off The system Bandpass is i determined by the individual slit widths Slits Control Automatic Bandpass Manual O Setting Bandpass to zero or changing Slit INPort A 24 um Width manually turns automatic slit adjustment off The system Bandpass is OUTPort B 24 determined by the individual slit widths 24 um OUTPort C Figure 13 Mono Utility Software Slit Control MMS260i 1 4M IMAGING SPECTROGRAPHS 20 6 DIFFRACT
70. o automatically adjust slits for If Bandpass is not set at zero the MS2601 will be adjust all slits to maintain the Bandpass resolution at wavelength moves and grating changes Setting Bandpass to 0 turns off this automatic adjustment Slit range is 6 2000 microns in 6 micron resolution steps For Bandpass adjustments requiring a slit opening larger than 2000 the slit goes to 2000 for values 0 6 the slit goes to 6 OUTPORT X OUTPORT SHIFT PORT Moves the motorized flip mirror inside the spectrograph to select either the axial or lateral output port as specified by the single integer parameter X The axial port is designated as 1 and the lateral port is designated as 2 The response to OUTPORT is the integer value describing the current output port MMS260i 1 4M IMAGING SPECTROGRAPHS 56 MS260i System Commands INFO LOCAL Query for basic instrument information Generates the same response as the GPIB specific That response is Oriel Model 74050 MS260i SNXXX VYY YY YY where XXX is the unit s serial number and YY YY YY is the version number for internal firmware This information is displayed for 3 seconds when LOCAL is pressed on the Hand Controller Model 74050 is displayed for single output port RS232 GPIB instruments while 74055 is displayed for dual output port RS232 GPBI models Model 74085 or 74086 is displayed for USB instruments single and dual output port models respectively HANDSHAKE X HANDS
71. oves are crucial to the performance of the grating but the basic grating equation may be derived by supposing a section through the grating surface normal to the ruling direction as a sawtooth pattern shown below Light rays A and B of wavelength A incident on adjacent grooves at angle to the grating normal are shown Consider light at angle D to the grating normal this light originates from the A and B rays as they strike the grating The path difference between the A1 and B1 rays can be seen to be a sin a sin D Summing of the rays A1 and B1 results in constructive interference if the path difference is equal to any integer multiple of the wavelength A a sin I sin D mA Where m an integer and is the order of diffraction This is the basic grating equation Note that if D is on the opposite side of the grating normal from I it is of the opposite sign We have considered only two grooves Including all the other grooves does not change the basic equation but sharpens the peak in the plot of diffracted intensity against angle D SUBSTRATE A k B bo X et a SINI a SIND GRATING NORMAL Figure 37 The Sawtooth Pattern of a Grating Section MMS260i 1 4M IMAGING SPECTROGRAPHS 67 19 2 THE GRATING EQUATION IN PRACTICE When a parallel beam of monochromatic light is incident on a grating the light is diffracted from the grating in directions corresponding to m 2 1 0 1 2 3 etc When a parallel beam of po
72. ovided Cornerstone dll CyUSB dll This section details how to interface with the instrument from either C NET or C Other NET languages can also interface with the C NET DLL as this is a function of the NET languages Please see Microsoft documentation on how to adapt code accordingly The Cornerstone monochromator is referenced throughout this set of examples They can also be applied to the MS260i 18 1 GENERAL CONSIDERATIONS Before using any of these programming examples the MS260i must be set up and configured for use It is suggested to review the complete user s manual to become familiar with the instrument The correct USB drivers need to be installed on the machine Please note that they are compatible with a Microsoft Windows operating system only Verify the DLL is in the same folder or in command path of executable before running or it will not be found 18 2 LABVIEW USERS LabVIEW users should refer to the MonoTerm software for example VIs The following directory contains a source distribution zip file composed in LabVIEW 2009 C Program Files Newport MonoTerm ee File Edit View Project Operate Tools Window Help gt 9 Vs alter 2 15pt Application Font 1206 169 8 Search 2 Mono Type Comand String Mono Reference
73. ovided that Buyer notifies Newport in writing promptly after discovery of the defect or nonconformity and within the Warranty Period Products may only be returned by Buyer when accompanied by a return material authorization number RMA number issued by Newport with freight prepaid by Buyer Newport shall not be responsible for any damage occurring in transit or obligated to accept Products returned for warranty repair without an RMA number The buyer bears all risk of loss or damage to the Products until delivery at Newport s facility Newport shall pay for shipment back to Buyer for Products repaired under warranty WARRANTY PERIOD All Products except consumables such as lamps filters etc described here are warranted for a period of twelve 12 months from the date of shipment or 3000 hours of operation whichever comes first Lamps gratings optical filters and other consumables spare parts whether sold as separate Products or constituting components of other Products are warranted for a period of ninety 90 days from the date of shipment WARRANTY EXCLUSIONS The above warranty does not apply to Products which are a repaired modified or altered by any party other than Newport b used in conjunction with equipment not provided or authorized by Newport c subjected to unusual physical thermal or electrical stress improper installation misuse abuse accident or negligence in use storage transportation or handling alter
74. pts full responsibility for restoring the goods to their original condition upon delivery and for assuming all costs and charges Confidentiality amp Proprietary Rights Reservation of Title The Newport programs and all materials furnished or produced in connection with them Related Materials contain trade secrets of Newport and are for use only in the manner expressly permitted Newport claims and reserves all rights and benefits afforded under law in the Programs provided by Newport Corporation Newport shall retain full ownership of Intellectual Property Rights in and to all development process align or assembly technologies developed and other derivative work that may be developed by Newport Customer shall not challenge or cause any third party to challenge the rights of Newport Preservation of Secrecy and Confidentiality and Restrictions to Access Customer shall protect the Newport Programs and Related Materials as trade secrets of Newport and shall devote its best efforts to ensure that all its personnel protect the Newport Programs as trade secrets of Newport Corporation Customer shall not at any time disclose Newport s trade secrets to any other person firm organization or employee that does not need consistent with Customer s right of use hereunder to obtain access to the Newport Programs and Related Materials These restrictions shall not apply to information 1 generally known to the public or obtainable from public sou
75. r wheel to the position specified in the single integer parameter X Acceptable values range from 1 through 6 The response to FILTER is the integer value describing the current filter position if there is no filter wheel connected or if the wheel is out of position O is returned and an error is set in the status byte Sending this command while the filter wheel is out of position will cause the wheel to search for 1 and then move to the requested position This search occurs at power on too FILTERZLABEL TTTTTTTT FILTER LABEL SHIFT LABEL Sets the label for the filter position specified by to the lt 9 character string parameter Valid values of are 1 6 using any other value will result in a status byte error indicating a bad command not a bad parameter The value of can be letters or numbers This label is for informational purposes only SLIT1MICRONS XXXX SLIT1MICRONS 1 Commands the motorized slit at the input port to open to the size specified by the integer parameter in microns Slit range is 6 2000 microns in 6 micron resolution steps for values larger than 2000 the slit goes to 2000 for values 0 6 the slit goes to 6 If the query responds with 0 there is a problem with the slit BANDPASS XXX XX BANDPASS SHIFT 1 The CS260 uses the Bandpass parameter to automatically adjust the motorized input slit The floating point parameter is the wavelength resolution t
76. rating instrument this process can be repeated for Grating 2 and Grating 3 If the selected grating s efficiency has a sudden increase or decrease at a particularly critical wavelength and the application demands extreme accuracy it may be more desirable to select the grating with the more gradual change in efficiency MMS260i 1 4M IMAGING SPECTROGRAPHS 23 Efficiency Efficiency Grating Efficiency Curves MS260i Imaging Spectrograph High Resolution Configuration 2353888883388383 Grating 1 74063 Grating 2 77985 Grating 3 74064 Wavelength nm The efficiency curves above are relative not absolute and were measured using an in plane near Littrow configuration Please use the curves as a guide and not as absolute data Grating Efficiency Curves MS260i Imaging Spectrograph Holographic Grating Configuration ce cL d cmm Z Grating 2 74161 238888383888 Wavelength nm The efficiency curves abow are relative notabsolute and were measured using an in plane near Littrow configuration Please use the curves as a guide and not as absolute data Figure 16 Grating Efficiency Curves High Resolution and Holographic Models MMS260i 1 4M IMAGING SPECTROGRAPHS 24 Grating Efficiency Curves MS260i Imaging Spectrograph Extended Range Configuration Grating 1 74065 Grating 2 74066 Grating 3 74067 Effic
77. rces 2 readily apparent from the keyboard operations visual display or output reports of the Programs 3 previously in the possession of Customer or subsequently developed or acquired without reliance on the Newport Programs or 4 approved by Newport for release without restriction First printing 2015 2015 by Newport Corporation Irvine CA All rights reserved No part of this manual may be reproduced or copied without the prior written approval of Newport Corporation This manual has been provided for information only and product specifications are subject to change without notice Any change will be reflected in future printings Newport Corporation 1791 Deere Avenue Irvine CA 92606 USA
78. rgs e USBEventArgs usbEvent e as USBEventArgs cs connect connect void connect cornerstone cs device usbDevices cs usbDevices deviceCount usbDevices Count void toggleButtons Boolean toggle btnResponse Enabled toggle btnSend Enabled toggle btnQuery Enabled toggle C Form file code namespace CornerstoneApp public partial class MainForm Form public Int32 nActiveUnit 1 Used only for multiple devices default below private void btnSend Click object sender EventArgs cs sendCommand txtComand Text txtInfo Text cs getLastMessage private void btnResponse_Click object sender EventArgs e txtInfo Text cs getResponse Second Controls for second device if needed NOT needed for only one device private void btnSend2 Click object sender EventArgs e cs setActive Device cs usbDevices Count cs sendCommand txtComand2 Text txtInfo Text cs getLastMessage MMS260i 1 4M IMAGING SPECTROGRAPHS 64 cs setActiveDevice nActiveUnit private void btnResponse2 Click object sender EventArgs e cs setActive Device cs usbDevices Count txtInfo Text cs getResponse cs setActiveDevice nActiveUnit MMS260i 1 4M IMAGING SPECTROGRAPHS 65 18 4 C USERS Oriel USB h file provides a COriel USB class that links DLL functions to connect and control the Cornerstone Remi
79. s blaze wavelength i e the wavelength with the greatest efficiency Actual performance is determined by the spectrograph wavelength accuracy precision and calibration Newport suggests having the spectrograph recalibrated annually by a qualified service technician Unless otherwise stated the values shown are for a 1024 array with 26 x 26 um pixels For 200 um high pixels 2048 element array the resolution is half this value All gratings used in the high resolution configuration are 1200 lines mm Calculation of Resolution Based on Fixed Slit Selection Grating 1 Grating 2 Grating 3 Fixed Slit Slit Width High Resolution Configuration 77222 10 um 0 25 nm 0 25 nm 0 25 nm 77220 25 um 0 35 nm 0 35 nm 0 35 nm 77725 77221 50 um 0 50 nm 0 50 nm 0 50 nm 77219 77728 100 um 0 65 nm 0 65 nm 0 65 nm 77729 77730 200 um 1 2 nm 1 2 nm 1 2 nm 77731 77732 500 um 3 2 nm 3 2 nm 3 2 nm For slits with widths of 50 um or less aberrations begin to play a role in the actual achievable resolution Empirically measured resolution values shown which differ from calculations due to aberrations present when using narrow slit widths This value is achieved with either a 1024 or 2048 element array MMS260i 1 4M IMAGING SPECTROGRAPHS 28 For other grating line densities or slit widths not specified in the previous table multiply the m slit width setting mm by the reciprocal dispersion nm mm to calculate t
80. s for the second and third gratings if required Depending on the configuration the spectrograph may have two or three gratings installed MMS260i 1 4M IMAGING SPECTROGRAPHS 38 11 3 DETERMINING THE GRATING CALIBRATION FACTOR The following procedure allows advanced users to perform a two point grating calibration Procedure 1 Select a radiation source that has at least two narrow spectral lines in the wavelength region of interest Select a detector with an operating range appropriate for the spectral lines Focus the radiation onto the entrance slit the spectrograph is F 3 97 Note that a narrower slit provides greater resolution Ensure the focused beam is parallel to the spectrograph s optical axis Command the spectrograph to select the grating to be recalibrated Use the STEP command to move the grating position until the first spectral line is visible at the output Note the wavelength at which this first spectral line peak appears Use the STEP command to move the grating position until the second spectral line is visible at the output 9 Note the wavelength at which this second spectral line peak appears 10 Use the formula to calculate the new Grating Factor 11 Use the utility software to enter the new Grating Factor The GRATINGn FACTOR command may also be used 12 Repeat the process for the second and third gratings if required Depending on the configuration the spectrograph may
81. s to a steadfast commitment to quality innovation hard work and customer care Newport is trusted the world over as the complete source for all photonics and laser technology and equipment Founded in 1969 Newport is a pioneering single source solutions provider of laser and photonics components to the leaders in scientific research life and health sciences photovoltaics microelectronics industrial manufacturing and homeland security markets Newport Corporation proudly serves customers across Canada Europe Asia and the United States through numerous international subsidiaries and sales offices worldwide Every year the Newport Resource catalog is hailed as the premier sourcebook for those in need of advanced technology products and services It is available by mail request or through Newport s website The website is where one will find product updates interactive demonstrations specification charts and more To obtain information regarding sales technical support or factory service United States and Canadian customers should contact Newport Corporation directly Newport Oriel Instruments 1791 Deere Avenue Irvine CA 92606 USA Telephone 800 222 6440 toll free in United States 949 863 3144 Fax 949 253 1680 Sales oriel sales newport com Technical assistance oriel tech newport com Repair Service rma service newport com Customers outside of the United States must contact their regional representative for all sales t
82. s to the wavelength calibration of the MS2601 It is used when installing new gratings or at any point when the wavelength calibration is disrupted Execute this command to define the current position as the wavelength specified in the numeric parameter XXX XXX Calculates a new OFFSET for the grating and saves it accordingly A calibration procedure is outlined in this user s manual ABORT ABORT Stops any wavelength motion immediately i e GOSCAN GOWAVE STEP etc STEP XXXX STEP STEP UP STEP DOWN Moves the wavelength drive by the integer number of steps indicated in XXXX The parameter can be positive or negative however one step is the smallest increment the MS260i can move and so this parameter must be an integer The response to STEP is the current step position as measured from the physical home sensors MMS260i 1 4M IMAGING SPECTROGRAPHS 53 MS260i Grating Commands GRAT X GRAT Moves the wavelength drive to the grating specified in the integer parameter The parameter should be either 1 2 or 3 When changing to grating 1 the instrument stops at the maximum wavelength for that grating When changing to grating 2 or 3 the system stops at the zero order position for that grating Therefore this command is usually followed by a GOWAVE command The response to GRAT contains three parameters separated by commas without spaces The first parameter is the grating number then the lines mm then the
83. so acceptable Capitalization Statements may be sent in upper case lower case or in any combination of the two Responses are returned in upper case For clarity throughout this manual Statements are shown in upper case i e STATEMENT and Responses are shown in upper case italics i e RESPONSE Parameters Some Statements require a parameter In this manual numeric parameters are shown as XX each X will fill a numeric position and decimals are used to indicate where floating point number should be expected Numeric notation is not strict and integers can be substituted for floating point numbers as desired There are some specific cases where alphanumeric values or exponential notation may be required these special Statements are detailed in this manual MMS260i 1 4M IMAGING SPECTROGRAPHS 49 16 3 STANDARD MODE Most normal communication with the MS260i especially communication handled inside closed application software is done in Standard Mode This mode follows all of the rules on the previous page plus there are some additional features for error handling The MS260i stores errors internally in a status byte and an error byte where each bit has a specific meaning Details of the status and error bytes can be found in this manual under Error Codes In all cases Statements must be terminated properly with If for MS260i to take any action Statements that are not understood or parameters that are unacceptable generat
84. t different angles off the grating Light occurs when there is constructive interference called grating orders All wavelengths interfere at one specific angle of the grating This is called the zero order When a parallel beam of monochromatic light is incident on a grating the light is diffracted from the grating in directions corresponding to m 2 1 0 1 2 3 etc e When a parallel beam on polychromatic light is incident on a grating the light is dispersed so that each wavelength satisfies the Grating Equation e Usually only the first order is desired The other wavelengths in higher orders may need to be blocked e The input spectrum and detector sensitivity determine whether order sorting or blocking filters are needed ORDER SORTING FILTERS For meaningful spectral measurements care should be taken to remove unwanted orders of radiation particularly if the input radiation is intense or the detector more sensitive at the higher order The examples below are for monochromatic light at the lateral output port This same concept applies when an entire of region of light is simultaneously viewed by a camera attached to the axial output port of the MS260i Erroneous measurements may be taken because what was thought to be a measurement with a single wavelength was actually a measurement using radiation at that wavelength but contaminated with higher order radiation Consider using Newport s Colored Glass Alternative Fil
85. t width selection in terms of throughput and resolution The concept of resolution is easily visualized by using the output of a monochromator which is also the type of output achievable by the MS260i lateral port dual output port instruments only This data was taken using Oriel s CS130 monochromator and using various slit widths to change the resolution The concept of resolution vs slit width is the same for the MS260i spectrographs 1 56nm Spectral resolution 4 0E 04 3 5E 04 3 0 04 2 5E 04 PU 8 E 2 0604 9 E 15504 250W d 300W 1 0E 04 75W Xe 5 0E 05 0 0 00 10nm Spectral resolution 400 500 600 700 800 900 100 11 Wavelength 6 0E 03 5 0E 03 4 0E 03 3 0E 03 250W QTH 300W Xe 75W Xe Typical Optical Power W 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 Wavelength nm Figure 18 Resolution vs Throughput MMS260i 1 4M IMAGING SPECTROGRAPHS 27 7 1 DETERMINING RESOLUTION All spectrographs featuring fixed slit holder s require fixed slits to be installed at the input port and optional output ports Fixed slits are ordered separately and should be the same size at the input and output ports Micrometers adjustable slits allow for continuous variation of the width and height Use the table below for guidance on resolution vs slit width Resolution is listed for each grating at the grating
86. ters for blocking higher order diffraction Example 1 Aspectrograph is set to output 600 nm and the signal read by a UV enhanced Si detector with a spectral responsivity range of 200 nm to 1100 nm e Additional output will be 300 nm 600 2 and 200 nm 600 3 These are the second and third order wavelengths e The second and third order wavelengths are within the responsivity range of this detector e In order to block these extra orders a filter needs to be inserted into the optical path Example 2 e Aspectrograph is set to output 1200 nm and the signal read by a Ge detector with a spectral responsivity range of 700 nm to 1800 nm e Additional output will be 600 nm 1200 2 and 400 nm 1200 3 These are the second and third order wavelengths e The second and third order wavelengths are outside the responsivity range of this detector MMS260i 1 4M IMAGING SPECTROGRAPHS 32 10 COMMUNICATION METHODS In order to satisfy the needs of as many users as possible the MS260i is designed to be controlled from a variety of sources The MS260i is capable of automatically controlling an optional filter wheel Model 74010 It is also able to interface with the motorized filter wheel included with Oriel s APEX2 light sources These filter wheels hold up to six 1 inch 25 4 mm diameter filters Neutral density filters can be used for intensity adjustment Order sorting filters may be installed to block higher order diffraction The filt
87. the factory The mount differs depending on whether it is a dual grating or triple grating instrument configuration Figure 14 Gratings Installed onto Mounts MMS260i 1 4M IMAGING SPECTROGRAPHS 21 6 1 GRATING TYPES Ruled grating masters also called interference gratings are produced using a ruling engine with an extremely fine cutting tool Holographic gratings are produced by recording interference fringes in photoresist The different techniques cause some differences in performance Holographic gratings are most frequently available at high groove densities due to manufacturing limitations inherent in the technology Holographic gratings are generally favored for work in the UV and through the visible to about 600 nm Holographic gratings produce less scattering thereby reducing stray light inside the spectrograph The signal to noise ratio SNR is the ratio of diffracted energy to unwanted light energy Although it may be assumed that increasing diffraction efficiency will increase SNR stray light usually plays the limiting role in the achievable SNR for a grating system Note that the actual signal to noise ratio will depend on the spectral content of the incident light and the detector Ruled gratings typically have higher efficiencies Ruled gratings may have periodic errors in the grating grooves caused by minor defects in the ruling machine resulting in anomalous readings or ghosts Holographic gratings do not suffer
88. ther similar terminal emulation programs Settings are as follows Baud Rate 9600 Data Bits 8 Parity None Stop Bits 1 Flow Control None Once the terminal program is open and running select a COM port and configure it according to the parameters previously listed Additionally set the terminal to Send line ends with line feeds There is no reason to turn on the local echo since the MS260i will automatically echo each character as it is typed All the MS260i responses end with a carriage return and linefeed Likewise all messages sent to the MS260i must end with the linefeed character 16 2 COMMAND AND QUERY SYNTAX For the purposes of this discussion communications with the instrument is divided into two parts The messages sent to the spectrograph are called Statements The messages received from the spectrograph are called Responses When communicating with the instrument two types of Statements are used Commands and Queries A Command causes some physical action or sets an internal parameter A Query asks a question of the instrument and automatically returns a Response Fundamentally the syntax is the same for all messages Termination Both Statements and Responses end with a carriage return ASCII character code 13 decimal and linefeed ASCII character code 10 decimal This manual will show the termination as cr If It may be more convenient to end Statements with only the linefeed If this is al
89. unication using the previous address will cause an IEEE 488 error If unsuccessful an error will be reported in the Status byte MMS260i 1 4M IMAGING SPECTROGRAPHS 57 16 7 ERROR CODES FOR LOW LEVEL COMMANDS MS260i errors are stored internally in the Status byte and Error code The Status byte is usually empty decimal value 0 but if an error condition occurs bit 5 of the Status byte will be set decimal value 32 By checking this byte all error conditions can be checked at once Further information is provided in the individual error codes There is a detailed list of error codes later in this There are two ways to check for errors First one can explicitly query the Status Byte This method is used for most communication and programming and is described in in the section for Standard Mode Use the query STB to get the decimal value of the Status Byte either 00 for success or zero for error If the response is not a zero then you should check the code for that particular error using the query ERROR Please note that reading the Status Byte and the Error Code resets them back to 0 Errors may be checked for immediately in Handshake Mode Turn this mode on with the command HANDSHAKE 1 Handshaking causes the MS260i to respond to every Statement with the Status byte The exact syntax is discussed in the section covering Handshaking Mode Again if the response is 20 then you should check the code
90. use a purchase order When the evaluation had been completed the owner of the product will be contacted and notified of the final cost to repair or replace the item If the decision is made to not proceed with the MMS260i 1 4M IMAGING SPECTROGRAPHS 72 repair only the evaluation fee will be billed If authorization to perform the repair or provide a replacement is obtained the evaluation fee will be applied to the final cost A revised purchase order must be submitted for the final cost If paying by credit card written authorization must be provided that will allow the full repair cost to be charged to the card 20 5 WARRANTY REPAIR If there are any defects in material or workmanship or a failure to meet specifications notify Newport Corporation promptly prior to the expiration of the warranty Except as otherwise expressly stated in Newport s quote or in the current operating manual or other written guarantee for any of the Products Newport warrants that for the period of time set forth below with respect to each Product or component type the Warranty Period the Products sold hereunder will be free from defects in material and workmanship and will conform to the applicable specifications under normal use and service when correctly installed and maintained Newport shall repair or replace at Newport s sole option any defective or nonconforming Product or part thereof which is returned at Buyer s expense to Newport s facility pr
91. y experimental factors as well as the performance of the instrument When comparing stray light specifications it is important to compare values that were measured under identical circumstances The spectral distribution of the source and the response of the detection system are often the dominant factors when determining a stray light value AVAILABLE MODELS The model number of each spectrograph reflects its features Refer to the part number code to determine the features present in the instrument If the model number differs from the code it is a Special Order configuration In that case refer to the Sales Order of the instrument for more information Available standard configurations are listed on Newport com Please note that not all configurations may be available MS260i COMPUTER INTERFACE OUTPUT PORT RG RS232 and GPIB IEEE 488 A Axial Output Port USB USB 2 0 D Dual Output Ports Axial and Lateral SLIT S GRATING CONFIGURATION FH Fixed Slit Holder 1 High Resolution MC Micrometer Adjustable Slit 2 Holographic MT Motorized Slit 3 Extended Range 4 Wide Bandwidth Figure 2 Model Number Codes MMS260i 1 4M IMAGING SPECTROGRAPHS 11 3 INITIAL SETUP 3 1 WHAT S INCLUDED e Preselected diffraction gratings installed and aligned e Electronic shutter at input port e A choice of single or dual output ports e A choice of micrometer adjustable slits motorized or fix
92. ystem prior to setup and use Do not use this equipment in or near water To prevent damage to the equipment read the instructions in the equipment manual for proper input voltage and check the requirement on the power supply This equipment is grounded through the grounding conductor of the power cord Route power cords and other cables so they are not likely to be damaged Disconnect power before cleaning the equipment Do not use liquid or aerosol cleaners use only a damp lint free cloth Lock out all electrical power sources before servicing the equipment To avoid explosion do not operate this equipment in an explosive atmosphere Qualified service personnel should perform safety checks after any service If this equipment is used in a manner not specified in this manual the protection provided by this equipment may be impaired Do not position this product in such a manner that would make it difficult to disconnect the power cords Use only the specified replacement parts Follow precautions for static sensitive devices when handling this equipment This product should only be powered as described in the manual Do not remove the cover for normal usage ELECTRICAL HAZARDS Make all connections to or from the instrument with the power off This instrument requires DC voltage for operation which is provided by an external power supply This power supply has no user serviceable parts Do not attempt to open the external power

MS260i™ - Newport Corporation

Contents

Download Pdf Manuals

Related Search

Related Contents

MS260i&trade; - Newport Corporation

Contents

Download Pdf Manuals

Related Search

Related Contents

MS260i™ - Newport Corporation