CO 2 mpact catalog
Contents
1. x LASER 2000 7 ULO Optics WWW LASERZOOO NL CO mpact User Manual Beam Delivery System for sub 500W lasers 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page ULO Optics HO CACO MEN TET 3 Laser mounts C LM and CMA nennen nnne nnns 4 IR lg Lehrer CN 4 Boami NS rater cree eters re seid seg T TUE 6 Exiender pipe CBRE Yy adamussim ut ee ee eee eee ee ee eee 6 Retractable mount C RM ssiutesansissnctoensdiessavacieseiarinninsiesasinawnaderuatlevnegurdimorseiekieanetanateaeel 7 PPE SUDDOFIS OAR ee A MN oe eee ee M MU 7 B amexpanders C BEX cidem eneupbiedtxeu uua ambe EE ee suRA DI IM tux map MEN 8 Beamexpander INCOM EE o T 8 Manual attenuator CMA mme me nemen heme he metre meret re reete rens 10 PANIE OON O A O gre 10 vire HU ALOR USO EE 14 Reflection isolator C R T E 15 PUNGDIG OLODE e s epenn eren E TT 15 COMMON til MTOM DIOCK C C EE 16 Fine focus adjustment CEA 17 Cening CoC O s 17 Lens nozzle assemblies GC EK E 18 ill gl ve M in T M 19 Desoption and HIE 19 EA UG E EE 19 Laser elst eeeie ketiliM 20 COnN SC e 21 e IAT E A ya spe gece E E A AET 21 IOUT CODO AUOT e2. Internal circuit For those who wish to provide their own controller the drawing below shows the internal circuit of the shutter head Note that only 5 pins on the connector are actually used Any controller must supply 12V to pin 1 and be able to provide up to 1A To open the shutter pin 3 is taken to OV This can be done via a simple switch or using a transistor The reflective opto switches OPB704 detect the presence of the mirror When the internal transistor sees light from the diode reflected off the mirror it conducts pulling the base of the 2N3904 up and causing it to conduct The latter acts as a current booster to supply the indicator LED and pass the signal for external use via pins 7 and 8 going high to denote detection The reverse biased diode 1N4007 suppresses any back emf when the solenoid is deactivated 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 19 D connector 9 way pins 473 880 1 e 12V 2 PLPLLLAL FE o 4 O PES ta 9 6 O 8 OPB704 OPB704 ta 307 913 307 913 Open signal 7 7 e Closed signal 294 312 1 2 3 4 5 O0O0O0000 0000 Rotary solenoid 35mm 45deg 6 7 8 9 343 313 390R 390R 390R
3. lens with nozzle 100mm FL lens with nozzle Part Number Qty C BE1 3 C BE1 6 C BE2 0 C BE2 5 C BE3 0 C BE3 5 C BE4 0 C BE5 0 C BE6 0 C BE7 0 C BEX X Qty Qty Qty Qty Qty C FFA ro Part Number Qty C LN38 C LN63 C LN100 For further information or to discuss your requirements with a member of our sales team please contact Laser 2000 Benelux 31 297 266 191 or info laser2000 nl Datasheets for every component of the COzmpact system can be downloaded from the COzmpact website at www co2mpact ulooptics com 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page28
4. 390R 163 533 3 Solenoid return 9 e OV PCB 10 way r a 1 25mm connector 279 9320 10 way housing 279 9207 Fig 1 Internal circuit of C SU head Laser Shutter Controller LSCO1 umicore d LASER SHUTTER CONTROLLER RMIN UMICORE LASER OPTICS LTD 24 2640 48 8882 iA SHUTTER Fig 1 Front and rear panels 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page20 Connections The LSCO01 is supplied with two cables a mains cable and one to connect to the shutter head terminated in the D type plugs The controller is powered from an 85V 260V ac supply connected to the rear panel IEC receptacle The shutter is connected using the cable supplied to the rear panel 9 pin D socket labelled SHUTTER If required the shutter can be controlled and monitored remotely via the other 9 pin D plug labelled PC Operation The front panel push button switches the controller mains power on or off It is illuminated when powered on Before switching on check that the toggle switch is in the closed position or if being controlled from a PC that a close signal is being sent This will ensure that the shutter does not open unexpectedly on power up The toggle sw
5. by the magnification factor Beamreducers Occasionally someone may wish to use a beamexpander in reverse as a beamreducer In principle there is no reason why this cannot be done however there are a few cautions to bear in mind 1 The power density at the output will increase with the square of magnification m m being the magnification of the beamexpander 2 The far field divergence angle of the output beam and any angular misalignment errors of the beam increase by the magnification m Centring the beam to the beamexpander will therefore be more critical and it may grow more rapidly than you expect 3 The focusing becomes much more critical The range will be approximately 1000 m through infinity to 1000 m millimeters Therefore some short focusing distances are possible It is advisable when setting up the beamreducer not to have any other optics further down the beam until the focusing is set correctly This will prevent possible damage from having a focused beam accidentally directed onto another optical component 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page9 Manual attenuator C MA http www ulooptics com docs pdf tdsulo 96 07 pdf Principle of operatio
6. com docs pdf tdsulo 96 05 pdf This adjustable component is intended as a manual focusing device for a lens and nozzle assembly By turning the notched ring the tube with the engraved scale lowers or raises at a rate of 1mm per turn 0 1mm increments are engraved on the outer sleeve In total there is 20mm of movement engraved as 10 5 0 5 10 with 1mm lines A locking knob is provided to secure the focus setting The tube does not rotate as it slides a pin at 90 to the locking knob rides in a slot to prevent rotation This in turn prevents any beam wander from residual lens centring errors Both ends of the focusing unit have the thread to take the thread inserts Centring cell C CC The centring cell has the two thread insert connections on each side one for the input and one for the output By adjusting the 3 screws in the body side it is possible to laterally adjust one with respect to the other either to precisely align the output to the beam or to introduce a deliberate offset Note that the screws need to be loosened on one side before those opposite can be screwed inwards All 3 screws must be tightened once the adjustment is made 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073
7. cooled beam dump Beam combiner 9 8ZBS3 45 R This optic finds use in the C BI beam injector unit Angled at 45 incidence the CO laser beam will be transmitted while the red visible laser strongly reflected off one surface Brewster windows ZBW5320MP and EZBW5320MP Brewster windows for use in attenuators and reflection isolators are made as matched pairs A Brewster window works best if it has a slight wedge 1 3 However this wedge deviates the beam going through it But by using an identical second window with the wedge orientated opposite to the first the angular beam deviation is corrected The beam lateral displacement is also corrected because both windows have the same thickness The windows are 53 x 20 x 3mm Angled at 67 4 to the incident beam they present a 20mm square profile Beamexpander output lens 11ZLF63 For all C BE magnifications this is the common output lens It is a standard lens and is used extensively for other applications Beamexpander input lenses There is a different input lens for each magnification Each is shaped to correct the spherical aberration of the output lens 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info oglaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page26 Request a Quotatio
8. far out that the beam is reflecting off the inside of the beam pipe Next either remove the C BI or retract the beam pipe at the output side Again place a piece of masking tape over the aperture Adjust the two screws X and Y to centralise the beam There is a few mm of movement available and the total area covered is circular 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info oglaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page23 When X and Y come loose while unscrewing or go tight while screwing in the laser mount inside has reached the limit The alignment process is iterative adjust A and B to centralise the beam in the far field and adjust X and Y for the near field Finally you may wish to make some fine adjustments with the CO beam on Cross wire C CW This useful item allows you to align the laser beam It is a thread insert with a pair of copper wires and can therefore be screwed in at any location between parts to check for a central beam Once the beam is aligned replace it with a normal thread insert A quick beam burn on card or viewing the beam on a mode plate will show the silhouette of the wires Make adjustments until the silhouette cross is central to the beam You need to check the alignment a vario
9. 0 60 70 80 90 Rotation angle of attenuator 6 deg Fig 6 Rotation of polarisation for a pair of uncoated ZnSe Brewster plates This is no problem if the process is polarisation insensitive but where the output beam must have a fixed plane of polarisation e g when the beam will subsequently be reflected off a phase retarder then some corrective action is required to rotate the polarisation back One way to accomplish this is by having a set of static Brewster plates afterwards However quite a few can be needed 6 to ensure that the plane of polarisation remains within 1 of its original direction The number of plates can be reduced by using the coated type although these have power handling restrictions 500W 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 12 Alternatively a second attenuator rotated by an angle in the opposite direction can re align the polarisation exactly In both cases the transmittance curve in fig 4 will be changed In summary Brewster attenuators are most useful when the laser itself has no means of power control and the process is polarisation insensitive The polarisation must also be linear Coated Brewster Plates By coating one surfa
10. 10 A um n Jee Tp Ts 26 0 633 2 591 68 90 99 90 47 28 67 70 99 99 49 73 67 57 50 01 2 403 67 40 50 33 2 393 67 32 50 51 Table 1 ZnSe Brewster angle data with srewster set at 10 6um value The Brewster angle does not vary much with wavelength so the transmittance does not vary greatly once set for a particular wavelength An attenuator based on the Brewster angle will work well over a broad range of wavelengths NOTE there are versions for 10 6um where coatings have been applied to the surface These will not function at other wavelengths A flat window tilted to operate at the Brewster angle of incidence is usually referred to as a Brewster plate or window In an attenuator two of these are mounted in a V arrangement as shown in Fig 3 Because of the 67 4 angle of incidence when ZnSe is used the plates need to be 2 6 times longer than their width in order to present a square profile to the beam The V configuration corrects for the beam displacement Fig 3 Arrangement in a V configuration of 2 x ZnSe Brewster plates There are 4 air ZnSe interfaces 2 plates in the attenuator each transmitting 100 Tp and 50 33 Ts Consequently after all 4 interfaces the nett transmittance is 100 Tp and 6 4 Ts These values represent the limits for the transmittance of an attenuator To vary the transmitted power the plates are rotated about the beam axis If 9 represents the angle between the dire
11. 3 80 S 70 60 Q S _ 90 c o amp 9 40 5 gt o 30 Oo c 20 c T 10 cc 0 0 10 20 30 40 50 60 70 80 90 Rotation angle of attenuator 6 deg Fig 8 Rotation of polarisation for a pair of coated ZnSe Brewster plates Attenuator use The attenuator has a graduated ring with lock screw Turning this ring rotates the Brewster plates inside and the scale reads the nominal transmission some later versions may have some extra numbers relating to the transmission with coated plates With the ring set to 100 96 note that the P plane of the Brewster plates align with the large arrow at the opposite end of the barrel This arrow also shows the preferred direction of laser beam travel more relevant for the coated plate version With the ring locked in the 100 position mount the attenuator in the system and rotate the whole body until the large arrow lies in the known plane of polarisation The P plane of the Brewster plates will then coincide with plane of polarisation and the transmission will be at a maximum 100 For a more accurate set up monitor the laser power through the attenuator and adjust for the maximum power reading In most lasers the plane of polarisation is either vertical or at 45 to the vertical meaning that the arrow will either be uppermost or 45 to one side Finally lock the attenuator to its supports both ends Turning the graduated ring will now vary the t
12. 675 Page 17 Lens nozzle assemblies C LNxx http www ulooptics com docs pdf tdsulo 96 06 pdf The lens and nozzle assemblies come for 3 standard lens focal lengths 38 63 and 100mm The lenses are mounted in a separate cell that is screwed into the nozzle section The C LN100 is a C LN63 plus an extension piece and is shown above The clear aperture inside the lens assembly is 17 5mm The copper nozzle is removed by unscrewing the cap while to adjust it s distance from the lens to give the correct stand off 3mm unscrew the lock ring and screw the threaded tube in or out Then tighten the lock ring The gas nozzle inlet allows a gas purge to be directed through the nozzle With the standard lens a pressure of up to 5 bar is possible The inlet requires 6 4 tubing 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 18 Shutter head unit C SU http www ulooptics com docs pdf tdsulo 96 09 pdf Description and use The shutter head uses a rotary solenoid to flip a Supermax coated Silicon mirror in and out of the beam When the shutter is closed the beam is reflected onto a water cooled beam dump When open the beam passes straight through the unit The open position is the elec
13. 7 266191 Fax 31 0 297 266134 Email info laser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page25 Fig 1 Definition of EFL BFL and FFL All the lenses are made from laser grade CVD ZnSe to the optimum meniscus form for focusing purposes and each surface is anti reflection AR coated for 10 6um Silicon mirrors 9 8SIS3 00 and 10SIS3 00 Made from monocrystalline mirror grade Silicon these mirrors are fitted into the C CM corner mirror blocks The mirror block will take either size 25 or 25 4mm diameter They are coated with ULO s Supermax coating giving 99 85 reflectance at 10 6um and 45 incidence The mirrors also are of zero phase type Phase retarders 9 8SPR3 90 and 10SPR3 90 These differ from the above Silicon mirrors in the coating The SPH type is designed to convert the linearly polarised laser beam into circular polarisation by means of a 90 phase shift difference retardance between the S and P components This has processing benefits for some materials e g metals They fit into the C CM corner mirror blocks The mirror block itself has to be orientated with respect to the plane of polarisation as illustrated below A retractable mount C RM may therefore be needed on the input side Silicon mirror 11SIS3 00 This Supermax coated mirror is 28mm diameter 1 1 and is used only in the C SU shutter unit With the shutter closed it reflects the beam into a water
14. Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page7 Beamexpanders C BEx x http www ulooptics com docs pdf tdsulo 96 O1 pdf Beamexpander theory As the name suggests a beamexpander s purpose is to enlarge the diameter of a laser beam This is done for two possible reasons 1 When focused a larger diameter beam will give a smaller spot Thus a beam is expanded to produce higher energy densities on the target 2 A large beam also has a smaller divergence and does not change its diameter as much when propagating over many meters unless deliberately defocused In a flying optics type system this helps to keep the energy density at the focus constant as the optics vary their distance from the laser and also reduces the focus shift due to the wavefront curvature variation The above two points can be expressed mathematically by the equations AM AF 5 ES 1 Where S Focused spot diameter F Lens focal length D Beam diameter at the lens MF Beam M squared factor not the magnification Note that the focusing lens must be diffraction limited 4M Do8 A 2 Where Do Beam waist diameter 6 Beam far field divergence full angle The right hand side of this equ
15. ation is a constant for any particular beam so as Do increases will decrease If a beamexpander s magnification is m then the input and output beams are related by the following equations Doy min 3 m 4 0 Oou 5 m Where D are the beam diameters and R the wavefront radii see Fig 1 G is the geometric focus setting of the beamexpander On more expensive models than the COzMPACT this will be the value engraved on the focus ring Normally however G is set by experimentation Note that if G is set to infinity beamexpander 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page8 has zero optical power the output wavefront radius is not equal to the input wavefront radius unless a beam waist is located at the input Rn e m Uu Fig 1 Definition of terms FOCUS LOCK ULO OPTICS The last equation 5 above relating the far field divergence on the input and output sides can generally be summarised by saying that all angles are reduced by m including beam alignment errors to the optical axis CO MPACT beamexpanders COMPACT beamexpanders are optically identical to ULO Optics s BSL12 series BSLs now being phased out Th
16. ce of each plate with a special coating it is possible to enhance the reflectance of the S polarisation to 98 from 50 at the expense of a slight loss to the P polarisation 99 transmission instead of 10095 The result is that the minimum transmittance through the attenuator is now much lower at 0 04 2 of 2 The coating is a complex stack of layers so the absorption limits the laser power to around 500W However this is the recommended limit for the CO2MPACT series anyway The corresponding curves for Fig 4 and 6 above are shown below in 7 and 8 Note that the transmission curve closely follows Malus s law T cos for a perfect linear polariser Note also that for a perfect polariser the plane of polarisation in the output would follow the attenuator all the way round to 90 For the coated attenuator however the polarisation will still flip back to zero but from a higher angle 100 90 80 70 60 50 40 30 20 10 Transmission T 0 10 20 30 40 50 60 70 80 90 Rotation angle of attenuator 6 deg Fig 7 Plot of transmission against rotation angle for a pair of coated ZnSe Brewster plates 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 1
17. ction of polarisation in the incident beam and the P plane of the Brewster plates then the transmittance of the attenuator is given by T 1 0 9358sin7 2 Fig 4 plots the results in a graph 100 90 80 70 60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 Rotation angle of attenuator 0 deg Transmission T 96 Fig 4 Plot of transmission against rotation angle for a pair of uncoated ZnSe Brewster plates 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 1 Less known is that the output plane of polarisation is rotated with respect to the input denoted here by 6 see Fig 5 As the attenuator is rotated the plane of polarisation is dragged with it but at a smaller angle It actually reaches a maximum angle before reversing and dropping back to zero This is due to Plane of polarisation Brewster plate incident beam P plane d Fig 5 Definition of angles 0 and 9 the residual transmission of the S polarisation which eventually dominates The formula for the rotation is shown here and Fig 6 is a graph n apu med 3 1 0 7466sin 8 I O Co Wu Rotation angle of plane of polarization deg NO e 0 10 20 30 40 5
18. d between connector SHUTTER pin 1 12V and pin 3 TR1 drain When switch SW is switched to CLOSE the gate of TR1 is pulled low by R2 and so TR1 is switched off Therefore no power is applied to the solenoid and the shutter assumes the default closed position When SW is switched to OPEN TH1 gate is pulled up to 12V and TR1 is turned on This provides a current path from 12V through the solenoid to Ov and so the solenoid energises and the shutter opens The shutter status switches are connected between 12V and connector SHUTTER pins 6 7 and 8 When the OPEN status switch closes it connects R1 to 12V so that LED1 lights and current flows through the emitter of the opto isolator IC1 causing the output transistor to turn on Operation of the CLOSED state is similar Note that the Locked function and LED3 are not relevant to the C SU 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page271 If SW is in the CLOSE position then the shutter can be controlled via connector PC If PC pin 3 has 45V applied with respect to pin 9 then current passes through fourth opto isolator IC1 emitter and IC1 transistor is turned on This will pull up the gate of TR1 and so turn it on The solenoid will b
19. e difference is that the CO2MPACT version has a slightly longer body and is modified to take a thread insert at the output end The input end has a built in thread The slide and lock focus mechanism allows beam wavefront radius to be adjusted The central position being factory set for infinity focus However the actual setting needed will be determined by experimentation The magnifications available are listed the Table 1 below along with input clear apertures Note that the lowest and highest magnifications possible in the housing are 1 3 and 7 0 respectively Although a longer housing is possible to cover magnifications 7 to 12 Mag 13 16 20 25 30 35 40 50 60 7 0 Input CA mm Table 1 Input clear apertures The output lens is common to all magnifications and together with the mechanical length of the slide and lock slot determines the focusing range of 1 metre through infinity to 1 metre Thus the beamexpander can be used as a long working distance focusing lens When used as such however the focal length is equal to the working distance 2G divided by the magnification m i e F G m E g when a x7 beamexpander is adjusted to focus over 1400mm the effective focal length is 1400 7 200mm not 1400mm You can use F 200mm in the equation above for spot size S provided D is the input beam diameter alternatively you could use 1400mm for F and the output beam diameter for D both are larger
20. e energised and the shutter will open SHUTTER PC DN Open signal Open detect Closed signa Closed detect Locked signal Locked detect Solenoid return BV GV e control Yellow Locked X D IRL1520 OPEN CLOSE Fig 2 Internal circuit of LSC01 controller Note that if you wish to control the shutter using a higher voltage than 5V then you need to add an external resistor in series with R4 390R The value should be R 80Vcontroi 390 Q and its power rating R 6400 W Also note there are no pull up resistors to the status pins They have been left as open collector so that the user can select the correct value according to their supply and desired signal 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page22 Beam injector module CB http www ulooptics com docs pdf tdsulo 96 03 pdf This module allows a visible red laser beam to be aligned with the invisible infrared beam This serves to act as an alignment aid further down the beam and as a reminder that the infrared beam is also present Power 46V amp 30mA is required at the jack connector to switch th
21. e following sections each of the individual parts is described Some require very little explanation but others require considerably more detail in order to explain the optical function and its use Example of an assembled system From top left to bottom right laser mount attenuator beamexpander pipe pipe support shutter beam injector corner mirror block extender pipe fine focusing unit centring cell lens and nozzle assembly Some short sections of beam pipe are between the various parts 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page3 This section view shows how a thread insert connects a length of pipe to a corner mirror block Laser mounts C LM and C LMA http www ulooptics com docs pdf tdsulo 96 10 pdf Coming in two versions these mounts allow the CO2MPACT equipment to be attached directly to the output end plate of the laser The screw hole pattern is arranged to match your laser The central hole is threaded to match the thread inserts see below from which beam pipe and other items can be attached A small amount of clearance in the screw holes will allow some sideways movement to centre the beam to the bore If your beam is accurately perpendicu
22. e laser on and light the LED indicator on the side The power supply supplied for this purpose is voltage switchable but should be set to the 6V option Diode Laser Inside the C BI is a visible red 650nm laser of 0 8mW power As is usual for this type of device DO NOT STARE INTO THE BEAM DIRECTLY AND ENSURE THAT YOUR EYES AVOID ANY REFLECTED BEAMS CO Laser Beam This is to be directed into the input aperture Make sure the beam is aligned to the centre of the beam pipe before installing the C BI The CO beam will pass through the ZnSe beam combining optic and emerge at the output aperture together with the visible laser beam Note that the clear aperture of this unit is 14 5mm IF YOU SEND THE CO LASER BEAM INTO THE WRONG APERTURE A SMALL OF THE POWER IS REFLECTED UP TO THE DIODE LASER AND IT S COLLIMATING LENS DEPENDING ON THE POWERS INVOLVED THIS COULD DAMAGE THE DIODE LASER Alignment of Visible Beam Before coupling to the beam pipe stick a piece of masking tape over the output aperture to check that the beam is more or less central Turn the CO beam off Mount the C BI in the system and install a target or cross wire further down the System Use an Allen key to adjust the tip and tilt screws A and B until the visible beam is central Do not press down on these screws otherwise you will compress the springs that you are trying to adjust Look for a clean beam Any spurious flares or arcs will indicate that the tilt is so
23. egene 21 Beaimnjector module C E 23 gio aien a E E ESEE E E E H 23 PIO OS LI Sl pas i UT Tem 23 Co Ear CIN NETT 23 Alignment of Visible IB E 23 OSS 20 0 24 TMS ACC AO TS cece creeds T TTE 25 are te 25 Focusing lenses 7 5ZLF38 7 5ZLF63 and 7 5ZLF100 25 Silicon mirrors 9 8S1S3 00 and 10200 26 Phase retarders 9 88PR3 90 and 103 O0 ccc cccccceeeeeeeeeeeeeeeeeeeeeaeeees 26 SIICON MUIFOF T1999 DU eeann REAR RS 26 Beam combiner GB ZB 53 4 EEN 26 Brewster windows ZBW5320MP and EZDBWDZOOMD esee 26 Beamexpander output lens 11ZLF63 ccc eecceceseeeceeeeeeeeeseesesseesenseessaneees 26 Beamexpander input lenses eene nnns 26 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page2 Introduction As the name suggests CO 2MPACT beam delivery is intended for small CO lasers in this case up to 500W power and with beams up to about 12mm diameter From the laser output to the work piece the beam delivery consists of components that enable the beam to be handled with efficiency The parts are easily assembled with the aid of the thread inserts and the system can be firmly secured to a bench top with the pipe supports In th
24. he latter holds a conical spring that bears on the mirror back to provide some restraining force Mirror blocks will be supplied pre aligned to within a few arc minutes so should not need much adjustment If large amounts of adjustment are actually required about 2 are available then check the alignment of the incident beam and whether previous components are correct The mirror can be changed without affecting the alignment To do this undo the two screws that hold the cover plate in place and remove together with the spring Pull on the edge of the mirror to remove or use a piece of tape stuck to the mirror back Replace with the new mirror and screw the cover plate on with the spring in place Note that the large coil of the spring fits into the recess inside the cover plate The mirror blocks accept the thread insert or retractable mounts One of the latter on the input side is recommended as this allows the mirror block to be orientated in azimuth to any angle useful when the corner mirror block contains a phase retarder Note that the clear aperture on the C CM is 16 4mm 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 16 Fine focus adjustment C FA http www ulooptics
25. itch opens or closes the shutter The left position will open the shutter and the right position will close the shutter Note that if the controller is switched off at the mains the shutter will default to the closed position The red OPEN indicator will light when the shutter is open The green CLOSED indicator will light when the shutter is closed Note Other ULO Optics shutters ESU types have a manually operated lock that allows the shutter to be locked in the closed position only The yellow LOCKED indicator will light to indicate this The CO2MPACT shutter C SU does not have a lock so the yellow LED is inactive The status of the shutter can also be monitored via the rear panel 9 pin PC connector Opto isolators are used to give a grounded signal to indicate open closed or locked and a high impedance for the inverse The shutter can be opened by applying 5V to the shutter enable pin 3 relative to GND Note that to operate the shutter from a computer set the toggle switch to the CLOSED position Fig 1 D connector pins on rear of LSCO1 PC SHUTTER 1 2 3 4 95 5 4 3 2 1 00000 O0000 0000 O000 6 7 8 9 9 8 7 6 SHUTTER pin 12V no connection Shutter enable no connection no connection Locked 12V locked Closed 12V closed Open 12V open GND locked high Z unlocked Closed GND closed high Z not closed Open GND open high Z not open Circuit Operation The shutter solenoid is connecte
26. lar to the laser end plate then the C LM will suffice however should you need to tilt the beam delivery over slightly to follow the beam then the adjustable version C LMA is recommended This consists of two plates the first being bolted to the laser and the second is adjusted for tip and tilt using the three screws A compressed O ring sits between the plates to provide the spring for the adjustment Thread inserts 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page4 These stainless steel thread inserts are used to couple together the various parts of the CO2MPACT range They have a M29 x 1mm thread and an inner diameter of 19mm Slots at each end allow some leverage to tighten against a stop and undo them again 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page5 Beam pipe C BPxx http www ulooptics com docs pdf tdsulo 96 04 pdf Beam pipe serves as a shroud to the laser beam so that accidental blocking of the beam cannot occ
27. lator in series Circularly polarised back reflected 1 d wave phase retarder Circularly polarised out going beam Linearly polarised back reflected Brewster dumped plates Linearly polarised out going beam fully transmitted Fig 1 Set up required for the reflection isolator As mentioned above the backward reflection must be polarised orthogonal to the out going beam so somewhere in the system between the isolator and work piece the polarisation must be rotated through 90 in order for the isolator to work This will happen in a system where a A 4 1 4 wave or 90 phase retarder mirror is used to convert the linearly polarised beam into a circularly polarised one Such an arrangement is 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nI www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Pagef 5 common and is widely used for metal processing The metals Aluminium and Copper are particularly noted for sending back an unwanted reflection towards the laser Fig 1 shows the arrangement that is required The out going beam is polarised for maximum transmission through the isolator and 45 to the S and P directions for the phase retarder mirror After reflection the beam is circularly polarised and is used in this state
28. n Requesting a quotation is easy Simply identify the components you need and fax this form back to us 31 297266 134 Contact Details Name Company Country Tel Fax Email Your Laser Laser Manufacturer Laser Power W Laser Model Optical Axis Height mm Beam Pipes Pipe Description 30mm long 100mm long 300mm long Adjustable 85 125mm long Beam Supports Beam Support Description 73mm high 78mm high 81mm high 123mm high Other please specify mm high Retractable Mount Corner Mirror pu Part Number Qty C BP30 C BP100 C BP300 C BP85 125 LL Part Number Qty C PS73 C PS78 C PS81 C PS123 HI C PSXXX Qty T z Qty 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info laser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page27 Beam Expanders Beam Expander Description 1 3 magnification 1 6 magnification 2 0 magnification 2 5 magnification 3 0 magnification 3 5 magnification 4 0 magnification 5 0 magnification 6 0 magnification 7 0 magnification Other please specify mm high Reflection Isolator Manual Attenuator Shutter Unit Beam Injector Module Fine Focus Unit Lens Nozzle Assemblies Lens Nozzle Description 38mm FL lens with nozzle 63mm FL
29. n The principle of operation is based on the Brewster angle When linearly polarised light is incident on an air optical material interface uncoated usually some of the light is reflected and some transmitted However when linearly polarised in the orientation shown in Fig 1 known as P polarisation there is no reflected light 10096 is transmitted into the material provided the angle of incidence is equal to the Brewster angle This is not so when the polarisation is in the perpendicular direction as shown in Fig 2 known as S polarisation P polarisation S polarisation Air Fig 1 P polarisation Fig 2 S polarisation If there is a mixture of polarisations then the situation is more complex but the transmitted light will contain less of all polarisations except P By using a series of interfaces eventually the transmitted light will be all P and some of the laser beam power is lost Obviously a window as 2 air material interfaces The value of the Brewster angle is calculated by T Brewster on 1 Where o is the refractive index of the material Table 1 lists the values for ZnSe against different wavelengths 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page
30. ransmitted power dumping the rest inside the body For prolonged periods of dumping power and for higher powers the body will get hot Fitting the water cooled jacket will then be advisable 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page 14 Reflection isolator C RI http www ulooptics com docs pdf tdsulo 96 08 pdf Principle of operation Optically the reflection isolator is identical to the manual attenuator but is not intended to allow the out going beam power to be varied It is installed in the system to allow the out going beam to pass without loss However any beam travelling back towards the laser and polarised in the orthogonal direction will be attenuated Using two uncoated Brewster plates the transmittance will be 6 4 and two coated plates about 0 0496 In some laser systems this function is useful to prevent a beam reflection from the work piece travelling all the way back into the laser cavity where it can cause instability to the power or damage in a high power laser The laser user will need to consult the laser manufacturer to estimate what power level can be tolerated by the cavity and hence whether coated or uncoated plates are necessary or even more than one iso
31. to process the material If a backward reflection occurs it is reflected off the phase retarder a second time and undergoes another 2 4 phase retardation This second reflection does not undo the first to give a zero retardation but adds to it to give a A 2 or 180 retardation The result is to re create linear polarisation but orthogonal to the out going beam Therefore the isolator will dump the beam Note that inaccuracies in the phase retarder coating and alignment of the polarisation to the mirror will result in elliptical polarisation in the reflected beam with a less efficient dumping of the power in the isolator Reflection isolator use The isolator is installed in the same way as the attenuator except there is no ring to adjust the power The arrow on the barrel defines the P plane of the Brewster plates and the preferred direction of propagation more relevant for the coated plate version Rotate the isolator in the beam until this arrow is aligned to the direction of polarisation or using a power meter gives the maximum transmittance Then lock in place Corner mirror block C CM http www ulooptics com docs pdf tdsulo 96 02 pdf The C CM corner mirror block uses 25 4mm 1 or 25mm diameter Silicon mirrors coated with the Supermax coating As an alternative though a 1 4 phase retarder may be used The mirror is mounted in a ring that has tip and tilt adjustments which are accessible through two holes in the cover plate T
32. trically activated state of the solenoid Therefore if the power were to fail the shutter will close a spring provides the force LEDs on the shutter head indicate the status red for open and green for closed The open and close positions are detected by opto reflective switches Power is provided via the 9 pin D connector and open close status can also be monitored via this connector An optional Laser Shutter Controller LSC01 supplies power and monitors the status of the shutter Note that the shutter is intended as a safety shutter and not for brief timing exposures Using the LSCO1 typical opening and closing times have been measured at 30 and 60 msec respectively as defined by the period in which neither limit switch sees the mirror Note that these times cannot be equalised due to the solenoid limitations The clear aperture is 19mm The beam dump is water cooled via the connectors 6 4 M6 For a water temperature rise of AT C and a laser power P Watts the water flow rate should be 0 014P AT litres min e g for a 10 rise in water temperature and 500W the flow is 0 7 litres min The shutter heads are provided with retractable screw rings for mounting to beam pipe Before installing the shutter check that the beam is centred to the beam pipe Also note that there is an input and output side Sending the beam in from the wrong side will cause it to hit the rear of the mirror mount The shutter will operate in any orientation
33. ur In particular for Health and Safety reasons an invisible laser beam such as the CO beam cannot be blocked by a part of the body Of course beam pipe also serves to connect the other parts of the beam delivery system together making it a more rigid structure Yet a third reason for its use is to contain a purge atmosphere that has a slight positive pressure This helps to keep dust out of the beam path as well as stabilising the beam from the effects of absorbing gases The standard lengths are 30mm 50mm 100mm and 300mm Using the thread inserts longer lengths can be created An odd length can be made using the extender pipe A 30mm length can also be supplied with a purge nozzle C BPP30 The internal bore is 19mm and connection is made to other components by the thread inserts Extender pipe C BPExx yy Extender pipe is a telescopic section of beam pipe that is used to bridge a gap that does not correspond to the standard lengths of fixed length beam pipe The extending section is a slide and lock mechanism The length range covered is 50 to 70mm in one version C BPE50 70 and 85 to 125mm in the second C 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info olaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page6 BPE85 125 As
34. us places working your way from the laser to the work piece Any odd mode pattern may indicate that the beam is reflecting off the inside of a pipe or is being clipped somewhere Fig 1 Aligned left and mis aligned right beam burns 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 297 266191 Fax 31 0 297 266134 Email info oglaser2000 nl www laser2000 nl RABO 36 96 07 139 BTW nr NL 807 677 814 B01 KvK Utrecht 32073675 Page24 Thread adapters Should the need arise where you wish to couple other beam delivery equipment to the COzmpact range these 4 adapters should help They have the M29 x 1mm thread and a 4 32UN thread in the male and female combinations The optics The list of optics used in the COzmpact beam delivery is as follows Focusing lenses 7 5ZLF38 7 5ZLF63 and 7 5ZLF100 These 3 lenses are used in the C LN nozzle assemblies They are all 19mm diameter and have an edge thickness of 2 0mm When mounted in a nozzle assembly the clear aperture will be 17 5mm The effective focal length EFL back focal length BFL and flange focal length FFL are as follows see Fig 1 7 5ZLF38 7 5ZLF63 7 5ZLF100 100 0mm EFL FFL BFL 06 06 2011 Official ULO Optics distributor LASER 2000 BENELUX C V Voorbancken 13A Postbus 20 3645 ZJ Vinkeveen Nederland Tel 31 0 29
35. with normal beam pipe thread inserts are used to connect to other parts and the bore is the same 19mm Retractable mount C RM The retractable mounts are used in pairs and fixed either side of a part that you may need to remove from the system without upsetting the position of other components Alternatively they can be used to lock other components in a certain azimuth orientation Attach them to the component using thread inserts and then use their coupling rings to connect to the beam pipe The coupling rings once unscrewed from the thread insert are simply pulled back to allow the part to be lifted out The beam injector and shutter units are supplied with these mounts Pipe supports C PS http www ulooptics com docs pdf tdsulo 96 04 pdf The pipe supports are to allow the beam pipe sections to be firmly clamped to a work surface at a height to match your laser They consist of 4 parts the base a middle section and a V section to hold the pipe and the clamp The base has 2 slotted holes to allow mounting to optical tables that have a hole spacing of 25mm or 1 The hole separation is 75mm 3 The middle section is the piece that is chosen to bring the beam pipe up to the correct height Common laser types catered for are those made by Rofin Coherent Synrad and Spectron There is a small amount of height adjustment available by loosening 2 screws on the support s side Standard heights are 73 78 81 and 123mm 06 06 2011
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