PHOTO DETECTOR 11PD USER MANUAL
Contents
1. 11PD User Manual 400 1049 nm 5 1050 1100 nm 7 400 1049 nm 5 1050 1080 nm 7 Specifications subject to change without notice Standa Ltd All rights reserved 5 5 Version 1 9 2 OPERATING INSTRUCTIONS v 2 1 WITH STANDA MONITORS To operate the 11PD Series photo detector connect the detector head to the input socket on Standa monitors with the cable supplied by Standa before turning the monitor on See monitor s instruction manual Adjust the reading to zero before measurements for best accuracy See procedure in section 2 2 below If you are using the fiber optic adapter put the black protective cover on the detector head before making the offset nulling If you want to subtract the room light do the offset nulling with the cover off 2 2 QUICK POWER MEASUREMENT PROCEDURE This section will show you the fastest way of making a laser power measurement with Standa monitors and power detector The monitor automatically recognizes all Standa photo detectors heads of version 5 or higher Then the monitor automatically downloades all custom technical data for the detector from the EEPROM in the DB 15 connector This data includes sensitivity model serial number version wavelength correction factors and time response Quick power measurement procedure Install the power head on its optical stand Slide the connector latch to the right to unlock the connector Connect a version2. standa PHOTO DETECTOR 11PD USER MANUAL Version 1 9 ii Warranty First Year Warranty The Standa power and energy detectors carry a one year warranty from date of shipment against material and or workmanship defects when used under normal operating conditions The warranty does not cover recalibration or damages related to misuse Standa will repair or replace at its option any wattmeter or joulemeter which proves to be defective during the warranty period except in the case of product misuse Any unauthorized alteration or repair of the product is also not covered by the warranty The manufacturer is not liable for consequential damages of any kind Customers must fill in and mail the warranty card in order to validate the warranty In the case of a malfunction contact the local Standa distributor or Standa office to obtain a return authorization number Return the material to the appropriate address below Contacting Standa Ltd To help us answer your calls more efficiently please have the model number of the detector you are using ready before calling Customer Support All customers Standa Ltd Svitrigailos 4 39 03222 Vilnius Lithuania Tel 370 5 2651474 Fax 4370 5 2651483 Email sales Standa LT Web www Standa LT Lifetime Warranty Standa will warranty any power and energy detector head for its lifetime as long as it has been returned for recalibration annually from the date of shipment This
3. 11PD User Manual Standa Ltd All rights reserved Version 1 9 1 2 PHOTO DETECTOR CONNECTORS 1 2 1 DB 15 intelligent connector The DB 15 male intelligent connector contains an EEPROM Erasable Electrical Programmable Read Only Memory that stores information such as the model of the detector the calibration sensitivity of the available spectral range with or without attenuator and the applicable scales for that specific 11PD Series head Wavelengths are not available where the sensor physical properties don t allow it The Standa monitors use the data in this connector to adjust their characteristics automatically to the power sensor being connected No calibration procedure is required when installing the power heads allowing for faster set up Table Il The DB 15 connector pin out USED BY Monitors Cathode for 11PD100 Si 11PD 100 SiUV and 11PD20 Ge USED BY Monitors Anode for 11PD100 Si 11PD 100 SiUV and 11PD20 Ge USED BY Monitors BODY GRND 11PD User Manual Standa Ltd All rights reserved 2 Version 1 9 1 2 2 Dimensions MECHANICAL APERTURE 11 50 938 10 SEE SPECIFICATIONS FOR OPTICAL APERTURE 55 e CABLE EXIT 19 7 274 8 32 UNC 2B Y 5 E CABLE EXIT NOTES 1 DIMENSIONS IN mm FIG 1 1 PHOTO DETECTOR DIMENSIONS 11PD User Manual Standa Ltd All rights reserved 3 Version 1 9 1 3 11PD SERIES SPECIFICATIONS Table Ill 11PD Series Specifications for Standa Monitors
4. 5 or higher power detector head using the PROBE INPUT JACK We recommend turning the monitor off before connecting a new head to avoid losing information from the detector head EEPROM Slide the latch to the left to lock the connector into place Switch the monitor ON or plug the monitor into the computer The monitor will default to autoscale and lowest wavelength without attenuator available If you have a photodiode detector you may want to obtain measurements in dBm rather than watts To do that select Settings gt gt Power Unit gt gt dBm Select the proper wavelength Remove the head s protective cover Put the detector head into the laser beam path The entire laser beam must be within the sensor aperture Do not exceed maximum specified densities energies or powers For the most accurate measurement spread the beam across 90 of the sensor area Adjusting the zero steps 8 to 10 9 Block off laser radiation to the detector 10 To reset the zero wait until the reading has stabilized The power read by the monitor when no laser beam is incident on the detector may not be exactly zero if the detector or monitor is not 11PD User Manual Standa Ltd All rights reserved 6 Version 1 9 thermally stabilized Warm up until the reading without laser power is stable for several minutes Half an hour warm up is recommended for measuring low powers 11 Set Diode Zero or Zero Offset or Offset refer to moniotor user manua
5. Detector 11PD100 Si 11PD100 SiUV 11PD20 Ge Monitor Compatibility 11Maestro 11M Link 11P Link 11Uno 11Tuner 1180102 Absorber Si Si UV Ge 20mAto1mA 31kHz 1 mA to 20 pA 31 kHz 20 pA to 2 uA 31 kHz Bandwidth 2 uA to 0 1 uA 29 Hz 0 1 pA to 1 nA 16 Hz Bandwidth Sampling Rate 50kHz 2048 average values Minimum repetition rate for average power measurements of a pulse laser 20mAto1mA 155 kHz 1 mAto 20 155 kHz 20 pA to 2 uA 155 kHz 2 0 1 uA 145Hz 0 1 pA to 1 nA 80 Hz Spectral range 320 to 1100 nm 210 to 1080 nm 800 to 1650 nm Peak sensitivity 980 nm 980 nm 1550 nm 36 mW 4 mW 30 mW Maximum Power typ 30 mW cm 55 mW cm lt 320 mW cm fo Density 1064 nm 532 nm 1064 nm Minimum Power 0 6 nW E 980 nm 0 6 nW 850 nm 2 nW E 1550 nm Maximum Average 100 W cm 100 W cm 100 W cm Power Density Typical Detector 6 3 mA cm 15 1 13 8 mA saturation current lt 140mA cm 210 219 18 320 399 nm 6 5 220 399 nm 6 5 400 999 nm 2 5 400 899 nm 2 5 dte Uncertainty 1000 1049 nm 5 900 999 3 5 800 1650 nm 3 5 1050 1100 nm 7 1000 1049 nm 5 1050 1080 nm 7 Resolutiond 1 5 pW 1 5 pW 1 5 pW Temperature offset dependence typical 20 20 100 Aperture 10 mm diameter 10
6. warranty includes parts and labor for all routine repairs including normal wear under normal operating conditions Standa will inspect and repair the detector during the annual recalibration Exceptions to repair at other times will be at Standa s option Not included is the cost of annual recalibration or consequential damages from using the detector The only condition is that the detector head must not have been subject to unauthorized service or damaged by misuse Misuse would include but is not limited to laser exposure outside Standa s published specifications physical damage due to improper handling and exposure to hostile environments Hostile environments would include but are not limited to excessive temperature vibration humidity or surface contaminants exposure to flame solvents or water and connection to improper electrical voltage 11PD User Manual Standa Ltd All rights reserved Version 1 9 iii TABLE OF CONTENTS WARRANTY E B n II First Ye r O NA ii Lifetime Warranty ii TABLE OF CONTENTS eenserenvenverenvenverensenserensenserensenserensenserensenserensenserensenserensenserensenserensenserensensenensenserensensesensensere LIST OF ILLUSTRATIONS ensenverenvenverensenverensenverensenserensenserensenserensenserensenserensenserensensersnsensersnseneesensenserensensessnsensere IV LIST OF TABLES sensenverenvenverensenvere
7. RS 1 1 INTRODUCTION The Standa 11PD Series photo detector family includes three photo detectors sensors 11PD100 Si 11PD100 SiUV and 11PD20 Ge The 11PD100 Si detectors use a silicon photodiode The 11PD100 SiUV detectors also use a silicon photodiode but have enhanced sensitivity at shorter wavelengths The 11PD20 Ge detectors use a germanium photodiode All three detector heads are 27 4mm thick by 38 1 mm in diameter Table I Measuring ranges of Standa 11PD photo detectors Configuration 11PD100 Si 11PD100 SiUV 11PD20 series series series Detector alone 0 6 nW to 30 mW 0 6 nW to 2 8 mW 2 nW to 30 mW With OD 1 attenuator 6 nW to 300 mW 6 nW to 25 mW 20 nW to 300 mW With OD 2 Attenuator 60 nW to 750 mW 60 nW to 30 mW 200 nW to 500 mW Note quoted maximum ranges are average power at the 1064 nm wavelength for 11PD100 Si and 11PD20 Ge 532 nm for 11PD100 SiUV and 850 nm for 11PD100 SiUV with OD 2 quoted minimum ranges are average power at the 980nm for 11PD100 Si 850 nm for 11PD 100 SiUV and 1550 nm for 11PD20 Ge The 11PD series are supplied with a 180 cm long flexible cable terminated with a DB 15 intelligent male connector for use with Standa Monitors NOTE To eliminate possible damage do not carry the detector using the connector cable The 11PD photo detectors may also be supplied with a stand Call your nearest Standa distributor to replace the sensor or to recalibrate the head See p ii Contacting Standa LTD
8. Standa Ltd All rights reserved 11 Version 1 9 Appendix A WEEE directive 1 1 Recycling and separation procedure for WEEE directive 2002 96 EC This section is used by the recycling center when the detector reaches its end of life Breaking the calibration seal or opening the monitor will void the detector warranty The complete Detector contains 1 Detector with wires or DB 15 1 instruction manual 1 calibration certificate 1 2 Separation Paper Manual and certificate Wires Cable Detector Printed circuit board inside the Detector or DB 15 no need to separate less then 10 cm Aluminum Detector casing Standa Ltd All rights reserved 11PD User Manual 12
9. cancels the offset in the first if they are identical We recommend zeroing the offset for all measurements to eliminate any drift that occurs between measurements 4 2 OFFSET DRIFT DUE TO TEMPERATURE The Photodiode Shunt Resistor is sensitive to temperature this affects the offset value When making very low power level measurements allow your system to warm up for 30 minutes or until the offset power is stable for several minutes The sensitivity of the phodiode also has temperature dependence See Fig 1 2 and Fig 1 3 for the typical temperature sensitivity dependence over the spectral range for the 11PD20 Ge 11PD100Si and 11PD100 SiUV 11PD User Manual Standa Ltd All rights reserved 7 Version 1 9 1 Temperature Coefficient a C 0 8 1 0 12 1 4 16 1 8 Wavelength um FIG 1 2 TYPICAL 11PD20 GE TEMPERATURE DEPENDENCE VS THE WAVELENGTH o in o o 0 5 Temperature Coefficient C 1 0 300 400 500 600 700 800 900 1000 1100 Wavelength nm FIG 1 3 TYPICAL 11PD100 SI AND 11PD100 SIUV TEMPERATURE DEPENDENCE VS THE WAVELENGTH 11PD User Manual Standa Ltd All rights reserved Version 1 9 4 3 SATURATION The maximum power varies with wavelength power density and from one diode to another When making measurements near the saturation power you must verify the saturation effect with a calibrated Filter 4 3 1 Procedure with a known transmission value filter Make the measurement with and with
10. essnennsersnsnnsersnsvnveesnennvessnennseesnennseesnennsvesnennsvesnennseennee 9 4 3 1 Procedure with a known transmission value filter sese 9 4 3 2 Attenuator calibration procedure sess neen rennen enne Esk ros 9 4 4 MEASUREMENT OF THE AVERAGE POWER OF A PULSE LASER 9 4 5 WAVELENGTH 9 4 5 4 Example ose 10 APPENDIX A WEEE 1 2 2 22 2 1 1 1 12 11PD User Manual Standa Ltd All rights reserved Version 1 9 iv LIST OF ILLUSTRATIONS FIG 1 1 PHOTO DETECTOR DIMENSIONS Avis cost e dado Du E 3a FIG 1 2 TYPICAL 11PD20 GE TEMPERATURE DEPENDENCE VS THE WAVELENGTH 8 FIG 1 3 TYPICAL 11PD100 SI AND 11PD100 SIUV TEMPERATURE DEPENDENCE VS THE WAVELENGTH a alte ll ndo og 8 FIG 1 4 11PD100 SI AND 11PD100 SIUV TYPICAL SPECTRAL RESPONSE eee 11 FIG 1 5 11PD20 GE TYPICAL SPECTRAL RESPONSE siena 11 LIST OF TABLES TABLE I MEASURING RANGES OF STANDA PHOTO DETECTORS 1 TABLE II THE DB 15 CONNECTOR PIN OUT vr 2 TABLE SERIES SPECIFICATIONS FOR STANDA MONITORS 4 11PD User Manual Standa Ltd All rights reserved Version 1 9 1 11PD SERIES PHOTO DETECTO
11. l A message may appears requesting you to put the black cover on your photodiode Put it on to block all light if you do not want to compensate for background illumination Do not put it on if you want to remove the signal from ambient light Press the ok after taking the appropriate action with the cover The monitor passes through all the scales to determine the compensation to null each one The message Diode Zero Done appears when the monitor has finished You are now ready to make an accurate measurement 12 Apply the laser beam to the detector head 13 The monitor displays the laser beam average power 3 DAMAGE TO THE OPTICAL ABSORBER MATERIAL v Damage to the optical absorber material is usually caused by exceeding the manufacturer s specified maximum incident in the average power density Refer to the specifications pages for the 11PD Series power head specifications Cleaning Use Alcohol and a clean cotton cloth 4 ERROR SOURCES The photodiode and monitor are NIST traceable Several errors source may affect your measurements 4 1 OFFSET Zero the offset before any measurement as described in Section 2 2 above Otherwise all measurements will include a component not related to the laser power This will add a systematic error to absolute power measurements This error may disappear from relative power measurements When you subtract two measurements made under identical conditions the offset in the second measurement
12. mm diameter 5 mm diameter b Warm up until the reading without laser power is stable for several minutes before offset nulling zeroing the display Null the offset after each new power up Half an hour warm up is recommended for measuring low powers Temperature 0 5 degrees Prior to reaching 3 linearity error d Lowest scale noise level Nominal value Depends on environmental electromagnetic interference 11PD User Manual Standa Ltd All rights reserved 4 Active Area Version 1 9 0 9 cm 0 9 cm 0 2 cm Response time10 90 0 2 sec 0 2 sec 0 2 sec Beam Position 11 780 nm 1 652 nm 1 O 1064 Dependence 3 1064 nm 3 1064 nm 3 800 nm Noise 5 pA 5 pA 60 pA Dimensions 27 4mm x 38 1mm dia 27 4mm x 38 1mm dia 27 4mm x 38 1mm dia Weight 130g 1300 1300 Sensitivity typical With attenuator 0 5 A W 980 nm 11PD100 Si OD1 OD2 0 45 850 nm 11PD100 SiUV OD1 OD2 0 98 A W 1550 nm 11PD20 Ge OD1 OD2 Maximum Power typ 300 mW 1064 nm 25 mW Q 532 nm 300 mW 1064 nm 6 nW 9 980 nm 6 nW 9 850 nm 20 nW 1550 nm 400 to 1100 nm 400 to 1080 nm 900 to 1650 nm Maximum Power typ w OD 2 0 75 W 1064 nm 30 mW 850 nm 0 50 W 9 1064 nm Minimum Power 60 nW Q 980 nm 60 nW 850nm 200 nW 1550 nm 630 to 1100 nm 630 to 1080 nm 950 to 1650 nm
13. near interpolation formula Sensitivity a SENS pow Slope AA Apesiren ALow S Sens micu E Sens ow Arow Slope Sensitivity desirea The sensitivity at the desired wavelength 11PD User Manual Standa Ltd All rights reserved Version 1 9 Slope The slope of the linear interpolation Sens ow Sensitivity at Low Sensitivity at Low The next lowest available wavelength near your desired wavelength The next highest available wavelength near your desired wavelength vesireo Desired Wavelength AA The difference between the desired wavelength and the inferior wavelength 4 5 1 Example You have a 11PD100 Si and your laser is at 632 8 nm See your CERTIFICATE OF CALIBRATION for the sensitivity of your power detector as a function of the wavelength Wavelength nm Sensitivity A W 620 0 32 630 0 35 640 0 37 650 0 40 660 0 43 632 8 nm is between 630 nm and 640 nm therefore Sensiow 0 35 A W SENSHIGH A 0 37 Low 630 nm 640 nm AA 632 8 630 2 8 nm Slope 0 37 0 35 640 630 0 002 Sensitivity desirea 0 35 2 8 0 002 0 356 11PD User Manual Standa Ltd All rights reserved 10 Version 1 9 Typical Spectral Response Responsivity AW 0 01 FIG 1 5 11PD20 GE TYPICAL SPECTRAL RESPONSE 11PD User Manual
14. nsenverensenserensenverensenserensenserensenserensenserenseneerensenserensenserensenserensensesensenserenseneessnsensene IV 1 11PD SERIES PHOTO DETECTORS eosevverenvenverensenvevenseneerenssneenensenennensenensensnensenssnennensenensensenennensenensensevennenssneee 1 1 1 INTRODUCTION 1 1 2 PHOTO DETECTOR CONNECTONRSS 2 1 2 1 DBzI5 mtelligent COMETE 3 inier rio onto iii 2 1 22 Dimensions Ws OAT peces d We 3 1 3 SERIES SPECIFICATIONS eese tassa 4 2 OPERATING INSTRUCTIONS 6 2 1 WITH STANDA MONITORS eenrerenvenversnvenverensensersnsensersnsenversnsvnsersnsvnversnsvnvessnennversnennsersnennseesnennseesnennsvesnennseennee 6 2 2 QUICK POWER MEASUREMENT PROCEDURE cscsssssssssscssssessessessssessesessessssessessesessersesessessesessersesees 6 3 DAMAGE TO THE OPTICAL ABSORBER MATERIAL eseorenversnvenversnrenversnevnversnevnsersnevnsersnevnseesnevasvesnevnseesnee 7 4 ERROR SOURCES eerenvenversnvenverensenversnsenverensenserensenserensenversnsvnversnevnversnsnnsersnsvnsersnevnvensnennsessnennsessnenaseesnennseesnevnseennee 7 4 1 OFFSET 5 AIN 7 4 2 OFFSET DRIFT DUE TO TEMPERATURE esserenvenversnvenversnsensersnsenversnsensersnevnversnsvnversnennsersnsvnsvesnevnsvesnevnseennee 7 4 3 SATURATION esesverenvenverensenversnsensersnsenversnsensersnsenverensenversnsvns
15. out the filter Your power ratio should be equal to the transmission value of the filter 4 3 2 Attenuator calibration procedure Make sure your stable power source is far below the saturation point Make the measurement with and without the filter The transmission value is the ratio of the measurement with filter without filter 4 4 MEASUREMENT OF THE AVERAGE POWER OF A PULSE LASER BEAM Conditions to be met The repetition rate must be at least 5 times the analog Bandwidth see table III The peak power must not saturate the detector To know if the detector is saturated use procedure 4 3 1 careful when making the attenuator calibration in pulse mode The peak power must be in the linear region of the photodiode Peak power Energy per pulse pulse width Energy per pulse Average power repetition rate 4 5 WAVELENGTH The photodiode response varies with wavelength You may select your wavelength with the Settings Wavelength menu of the monitor or enter you wavelength in the Settings Custom menu of the monitor If you decide to use the photo detector without a Standa monitor you will have to use the sensitivity given by the photo detector calibration certificate to calculate the power on you laser beam If your wavelength is not given by the calibration certificate you will have to make a linear interpolation between two of the available calibration values Fig 1 4 and Fig 1 5 shows the typical spectral response Li
Download Pdf Manuals
Related Search