EOT 1010-1080nm FARADAY ROTATOR/ISOLATOR USER'S
Contents
1. EOT 1010 1080nm FARADAY ROTATOR ISOLATOR USER S GUIDE Thank you for purchasing your Faraday Rotator or Isolator from EOT This user s guide will help answer questions you may have regarding the safe use and optimal operation of your Faraday Rotator or Isolator TABLE OF CONTENTS I Faraday Isolator Overview siiccccassdesacdayceesutadaciadas jexataan ides sediweavaenuscea ineeie aiaeei iisisti aiies 1 II Safe use of your POT Faraday Isolator sccacaszccsvacssaceenenesvaynsasdacdenacoseeesasaei oasanancscwabasacinacesarecapaaees 2 IHI The EOT 1010 1080nm Faraday Isolator yes cscscevsestorenreasetronatieete wleteneucimie weet 4 IV Using your Faraday Isolator sccsscccsossedscsessnssceveviavenasenavncusuaseasesceeannsveaeaasns asdaunoncundassenscasusscevadse 7 V Wing your Faraday ISOl tOtsssoionisisepeeesisnesi nesse seene ee a Te Ean ENE E aS 8 VI Diagrams 1010 1080nm Faraday Rotator Isolator cee ceeesceeeeseeeeeeeeeeseeeeeseeeeenneeteneeeeeaeees 10 VII Warranty Statement and Rep ait psec ctssccens ceded essei al atanseatape cannes evencdesti pad aseeeecstcadvalarenemex 11 VIL Specifications 1010 1080nm Faraday Rotators and Isolator oo eee eeeeeeeeereeeeeeeeeeeeaees 12 I Faraday Isolator Overview Your EOT Faraday Isolator is essentially a unidirectional light valve It is used to protect a laser source from destabilizing feedback or actual damage from back reflected light Figure below identifies the main elements of your Far2. 10 0 0 0 Typical Isolator Performance 40 0 97 35 0 96 5 30 0 aa o 25 0 5 o c a 20 0 D955 ae 15 0 9 S 95 10 0 94 5 5 0 0 0 94 0 10 20 30 40 50 1 Temperature C tTransmission lsolation dB 1 02 1 04 1 06 1 08 Wavelength um tTransmission lIsolation dB Isolation dB Notes l Operating Temperature Performance of EOT s Faraday Rotators Isolators is related to operating temperature For information on the effect of operating temperature on EOT s Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 12 of 13 ZOT Faraday Rotators Isolators please review our technical bulletin Effects of Temperature on EOT s Faraday Rotators Isolators 2 For incident powers 250W please consult EOT You may either contact EOT s sales department at sales eotech com or view our Custom Rotators page on our website www eotech com 3 For apertures gt 20mm You may either contact EOT s sales department at sales eotech com or view our Large Aperture Rotators Isolators page on our website 4 Pulsed Damage Threshold The pulsed damage threshold of your free space Faraday Rotator or Isolator can be determined at pulsewidths other than 10ns by using the Root T scaling method Please visit our Calculators page on
3. Direction of arrow on device X axis 000 Laser Source Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 6 of 13 IV Using your Faraday Isolator Observe the guidelines for safe use of your Faraday Isolator found in Section II above when removing your isolator from its shipping container Do not remove the protective dust cover end caps from the polarizers until the device is in a clean relatively dust free environment sales eotech com ees www eotech com i Figure 7 Remove the protective dust cover end caps in a clean environment Save the protective end caps packaging material and containers in the event that the device should ever need to be returned to EOT Verify that the input and output polarization states are consistent with the intended mode of operation as described by the purchase order model number If not either send the device back to EOT see Section VII or if desired readjust the isolator as required see Section V With the source laser off or running at very low power less than 250mW position the Faraday Isolator such that the source laser beam can be directed through the input aperture Critical alignment of the Faraday Isolator should be done at low power less than 250mW in order to prevent optical damage to your isolator or laser source Use IR cards IR viewers or heat sens
4. 25W transmitted or 0 5W rejected backward propagating radiation the polarizer covers will need to be rotated so that the escape ports allow rejected polarization light to be safely dumped onto a beam dump Failure to allow these rejected polarizations to escape can cause the device to heat up Such heat can degrade the performance of the Faraday Isolator or in severe cases cause damage to optical components in the isolator While working with low alignment level power and wearing safety glasses physically grasp the polarizer cover and rotate it by 90 degrees Any rejected polarized beams in either the forward or backward propagating directions can now exit the polarizer cover Use an IR viewer or IR card to locate these beams Ensure that they are terminated on beam dumps consistent with the maximum amount of power that may be in such beams In addition to high rejection gt 30dB of any undesired linear polarization component in transmission the input and output PBSC may reflect as much as 3 of the desired transmitted polarization Again backward propagating rejected beams will exit from the PBSCs from the side which has a dot superimposed on the transmission axis scribe line Forward transmission rejected beams will exit from the other side of the PBSCs If the Faraday Isolator is used in application where strong reflections and or optical gain elements amplifiers exist there may be very high power rejected beams for backward propagating li
5. 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 4 of 13 ZOT Figure 3 shows a device aligned for a horizontal input polarization The dot superimposed on one of the polarization transmission axis scribe lines on the endplate of the input polarizer mount denotes the side of the input PBSC to which backward propagating i e isolation direction light will get directed In the case shown this direction is to the right Figure 4 shows a device aligned for a vertical input polarization Since the dot is on the bottom side of the polarizer backward propagating light will get directed downward as shown Figures 5 and 6 below show output views of an EOT 1010 1080nm Faraday Isolator In both cases the Faraday Isolators have been adjusted for horizontal input polarization Figure 5 Negative Z rotation Figure 6 Positive Z rotation Figure 5 shows a Faraday Isolator configured for negative Z rotation Coarse wavelength tuning adjustment can be made by aligning the polarization transmission scribe lines to the appropriate scribe line on the polarizer clamp ring When the polarization transmission axis scribe line is aligned with the line labeled 1030 the device is nominally adjusted to operate optimally at 1030nm If the polarization transmission axis scribe line is aligned with the line labeled A then the device is nominally adjusted to operate optimally at 1010nm If the polarization transmi
6. 5uW If necessary loosen the baseplate clamp screw to allow the output polarizer transmission axis to be rotated parallel to the source laser polarization axis Retighten this screw when complete Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 9 of 13 ESOT Loosen the three button head output polarizer clamp ring screws just enough so that the output polarizer mount can be rotated the output polarizer is adjacent to the laser source at this point Rotate the output polarizer mount until a minimal reading is indicated on the power meter Retighten the output polarizer clamp ring screws The minimal reading should be below 0 5uW If not call EOT see Section VII below The Faraday Isolator is now optimized to operate at the new laser source operating wavelength It may now be installed for operation in transmission with the laser source as per Section IV D Changing the direction of Output Polarizer PBSC Rejected Beam Steering Section A above described how to orient the input polarizer to steer rejected beams as desired If the output polarizer rejected beam steering direction needs to be changed loosen the three output polarizer clamp screws and rotate the output polarizer mount by 180 before re tightening the screws Depending upon the isolation requirements follow either Procedure B coarse adjustment or Procedure C fi
7. from the path over which your EOT Faraday Isolator is to be moved prior to attempting to move it Do not pick up the isolator by its ends i e apertures where the attractive magnetic fields are strongest Always pick the isolator up along its sides 2 Never attempt to disassemble the magnetic housing of your Faraday Rotator Isolator Serious injury could result 3 Reflection of rejected beams from the input and output polarizer The polarizer covers have been rotated at the factory to block all beams rejected from the polarizers In the event that your Faraday Isolator will be used with transmitted average powers in excess of 25W or will block backward propagating light in excess of 0 5W Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 2 of 13 ZOT average power these polarizer covers must be rotated to allow rejected beams to exit through the escape ports see Figure 1 onto user supplied beam dumps These rejected beams can represent a hazard to users and or their colleagues Care must be exercised to ensure that all rejected beams both transmission and isolation directions are accounted for and terminated into functional beam dumps Wherever possible keep the strongest rejected beams in the horizontal plane of the table or otherwise safest direction typically down into the table Always wear laser safety glasses or go
8. aday Isolator Magnet Housing Serial Number Input Polarizer Mount Polarizer Cover Ring Clamp Output Polarizer Mount Figure 1 EOT 1010 1080nm Faraday Isolator The Faraday Isolator is a cylindrically shaped magneto optic device Strong Neodymium Iron Boron permanent magnets are used to generate high gt 10 000 Gauss axially oriented fields within the magnet housing The strong longitudinal field causes 45 Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 1 of 13 ESOT degrees of non reciprocal polarization rotation for propagating light via the Faraday Effect in the terbium gallium garnet TGG crystal located within the magnet housing In operation the magnet housing is sandwiched between input and output polarizers that have their transmission axis oriented 45 degrees relative to each other to account for the 45 degrees of Faraday rotation in the TGG crystal in the forward transmission direction In the reverse isolation direction the non reciprocal Faraday rotation and the 45 degree polarizer transmission axis angle add so that the polarization transmitted by the output polarizer is rejected at the input polarizer Your EOT Faraday Isolator is labeled with a serial number on the baseplate of the device II Safe use of your EOT Faraday Isolator The operational hazards prese
9. ated hazards The Faraday Isolator external magnetic fields can draw ferromagnetic objects into the magnet housing which can damage the optical elements within the device Keep a suitable area from the Faraday Isolator in all directions clear of any loose ferromagnetic objects Ideally use non magnetic tools such as stainless steel or titanium and hardware to secure the Faraday Isolator If only ferromagnetic tools are available use extreme care when using them around the Faraday Isolator It is always helpful to bring such tools towards an aperture or end radially rather than along the optical beam path Doing this ensures that the fields will tend to pull such objects into the magnet housing endplate rather than into the optical aperture Where possible use two hands one to hold the tool and the other to guide it to the desired destination Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 3 of 13 EOT Another concern regarding external magnetic fields is their effect on magnetically sensitive devices The external fields are strong enough to induce a pulse of current in electronic devices such as digital watches that can destroy them The fields can also disrupt the operation of other mechanical devices with ferromagnetic parts in them Finally the external fields can erase information from magnetic strips such as those fou
10. d Retighten the baseplate clamp screw Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 8 of 13 ESOT If it is desired to critically adjust the input polarization for maximum transmission of the Faraday Isolator the power rejected by the input PBSC in transmission can be minimized This rejected beam can be accessed as per Section IV above As always use caution when allowing rejected beams to escape from the polarizer covers Confirm the direction and safe termination of these beams at low power Wear laser safety glasses or goggles Protect your colleagues by safely terminating beams and ensuring that they are wearing safety glasses or goggles as appropriate At the desired operating power level minimize the power in the rejected input polarization with a power meter or other suitable power indicator When the power is minimized retighten the baseplate clamp screw B Coarse Wavelength Adjustment If it becomes necessary to operate the Faraday Isolator at a wavelength other than the factory aligned wavelength it is possible to optimize the isolation of the devices anywhere within the wavelength range of 1010 1045nm or 1045 1080nm This can be achieved quickly by simply aligning the polarization scribe line on the output polarizer with the appropriate wavelength indicator scribe line on the polarizer clamp ring The optimal operati
11. ggles consistent with all laser frequencies and power levels present See Sections III and IV for further details 4 Failure of operating personnel to observe standard laser safety by sighting down through the ISP Rotator when laser radiation is present The optical elements within the EOT Faraday Isolators can be transmissive throughout the visible and near infrared Consequently it is never appropriate to view through the device in either the transmission or isolation direction when laser radiation is present even with laser safety goggles Never sight through your EOT Faraday Isolator in either direction when there is any possibility of laser radiation being present 5 Harm caused by external magnetic fields Your EOT Faraday Isolator has been designed to meet existing federal safety guidelines for external fields as noted previously Such guidelines could change in the future as more information becomes known or reviewed regarding the interaction between magnetic fields and human health Since various claims exist regarding the potential harmful and beneficial effects of magnetic fields on humans it is prudent to limit interaction with these fields as much as possible Personnel with any magnetically sensitive implants such as pacemakers should present a copy of this report and consult their medical doctor regarding any potential complications which could arise from the isolator external magnetic fields 6 Other non health rel
12. ght at the input polarizer If the average power levels used do not exceed 25W transmitted or 0 5W of backward propagating power then the polarizer covers may be kept in their factory positioned orientation all rejected beams will then be blocked by the polarizer cover However if the Faraday Isolator is to be used with very high peak intensities it is prudent to allow rejected beams to escape on to external beam dumps to prevent any ablation damage to the nickel plated polarizer covers Follow the same procedure above as for high average powers in order to safely terminate all rejected beams V Tuning your Faraday Isolator A Adjusting Input Polarization The transmission axis of the input polarizer is parallel to the scribe line found on the input polarizer endplate If the linear polarization of the laser source is geometrically known aligning the input polarization of the Faraday Isolator to that of the laser source is straightforward Simply loosen the 4 40 socket head baseplate clamp screw in the baseplate until the magnet housing rotates freely Continue to rotate the magnet housing until the input polarizer transmission axis scribe line is aligned to that of your laser source If the direction of any rejected polarizations at the input polarizer is important they can be determined by noting that the dot superimposed on one of the endplate scribe lines is associated with the direction that a backward propagating beam will be directe
13. itive film to ensure that the source laser beam is centered on the input and output apertures It is also preferable to use an IR viewer to ensure that weak reflections from AR coated optical surfaces in the Faraday Isolator are not being directed back into the source laser The optical surfaces in the Faraday Isolator are angled slightly to reduce these reflections However if any such reflections exist the device may typically be tilted by a small amount to ensure that such back reflections are not coaxially aligned with the source laser beam Increasing the distance between the Faraday Isolator and the source laser can also help ensure that no reflections couple back into the source laser if necessary Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 7 of 13 ESOT At this point the Faraday Isolator should be secured to the work surface with two 2 20 or M6 screws one for each slot in the baseplate flanges Steel ferromagnetic ball drivers or other such wrenches will be attracted to the external magnetic field surrounding the device If possible use anti magnetic stainless steel or titanium tools If ferromagnetic tools are used it is desirable to introduce them slowly towards the device from the sides along the direction of the baseplate flange slots If the Faraday Isolator will be used with average powers in excess of
14. model number together with the definition of the coordinate axis system which defines the Z rotation sense Numbering Fields and Coordinate System for EOT 1010 1080nm Faraday Isolator General Format for Numbering Field AA B CCCC DDD EEE Field Description 1 2 3 4 AA is the aperture size e g 08 8mm B is the device type I isolator R rotator CCCC is the operating wavelength in nm DDD is the input polarization axis angle A right hand X Y Z Cartesian coordinate system is used in which the direction of beam propagation away from the laser source is along the positive Z axis The X axis is in the plane of the baseplate The Y axis is vertical normal to the plane of the baseplate The XY plane forms the plane of polarization The XZ plane forms the plane of the baseplate As an example a horizontal input polarization is 000 or 0 degrees A vertical polarization is 090 or 90 degrees If no polarization is selected by the customer 000 will be assigned For rotators this field does not apply EEE is the output polarization which is 45 degrees from the input polarization if no waveplate is used If a waveplate is used and no output polarization is specified the default setting is the input polarization plus 90 degrees The angle convention is the same as described for DDD For rotators this field does not apply Y axis 090 Positive Z axis Direction of Beam Propagation Z rotation
15. nd on credit and ID cards Remove all magnetically sensitive materials and devices such as watches computer hard drives and magnetic strips from operators prior to working in the proximity of an isolator III The EOT 1010 1080nm Faraday Isolator Input Polarization Axis V 45 H Polarizer Clamp Ring Polarizer Dust Cover Polarization Transmission Axis Scribe line Figure 2 Overall view of an EOT 1010 1080nm Faraday Isolator With the polarizer covers off a polarizing beamsplitter cube PBSC can be seen at each end of the device The inscribed arrow on the baseplate shows the transmission direction The output PBSC is seen to be oriented with its transmission axis rotated 45 degrees relative to the input PBSC The input polarization shown is horizontal The central magnet housing together with the TGG crystal residing in its center forms a Faraday Rotator The Faraday Rotator rotates the input horizontal transmission axis by 45 degrees so that transmitted light has a polarization aligned with the output transmission axis The input and output PBSCs work in conjunction with the central Faraday Rotator to form a Faraday Isolator as described previously in Section I Figures 3 and 4 below show input views of an EOT 1010 1080nm Faraday Isolator Figure 3 Horizontal Input Polarization Figure 4 Vertical Input Polarization Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935
16. ne adjustment in order to fully optimize the isolation of the device with this output polarizer orientation E Waveplate Option and Adjustment As described in Section III above in the Numbering Fields and Coordinate System section it is possible to order a Faraday Isolator with a half wave plate on the output Should any of the above adjustments become necessary or if the desired output polarization changes the waveplate will need to be adjusted To realign the waveplate loosen the radially oriented setscrew in the output polarizer endplate and rotate the waveplate until the desired output polarization is achieved Retighten the waveplate set screw Do not over tighten VI Diagrams 1010 1080nm Faraday Rotator Isolator A 1010 1080nm Faraday Rotator 3s lt f 0 Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 10 of 13 Aperture mm C B 1010 1080nm Faraday Isolator E OG a H Be ee ee GUO 225 400 aa3 3 86 1 00 1 00 a 5 25 VII Warranty Statement and Repair EOT warrants its products to be free from defects in material and workmanship and complies with all specifications EOT will at its option repair or replace any product or component found to be defective during the warranty period This warranty applies only to the original purchaser and is not transfer
17. ng wavelength corresponding to scribe lines labeled A and B is a function of the rotation sense of the device ordered see Section III for definition Use the table below to determine the optimal operating wavelength corresponding to each scribe line Negative Z Rotation Positive Z Rotation Scribe Line 1010 1045nm 1045 1080nm 1010 1045nm 1045 1080nm A 1010nm 1045nm 1045nm 1080nm 1030nm 1064nm 1030nm 1064nm 1030nm 1064nm B 1045nm 1080nm 1010nm 1045nm To re align the output polarizer mount loosen the three button head polarizer clamp ring screws just enough to allow the output polarizer mount to rotate easily Once adjusted re tighten the polarizer clamp ring screws by equal amounts C Fine Wavelength Adjustment The above procedure is convenient for a quick realignment of the operating wavelength To achieve maximum isolation for a given wavelength the following procedure should be used With the source laser operating at an average power of 0 5W or less attenuate the beam if necessary to achieve such a low power level direct the source laser beam through the Faraday Isolator in the reverse direction through the output polarizer first and then through the input polarizer Use an IR viewer to view the transmitted radiation to ensure that it is directed onto a power meter The power meter should be sensitive enough to detect power levels below 0
18. nted to operating personnel by the use of your EOT Faraday Isolator are listed below An explanation of how the Faraday Isolator is designed together with procedures users can employ to eliminate or minimize these hazards is presented in italics 1 Danger of sharp ferromagnetic objects being attracted to the residual permanent magnet fields outside of the ISP Rotator This hazard is of most concern if such fields cause flying objects when being handled Your EOT Faraday Isolator requires strong internal magnetic fields to operate properly Efforts have been made to minimize external fields from the device while still maintaining a relatively small and cost effective package The external fields are designed to be well within federal safety guidelines which limit external fields from magnetic devices to be less than 2KGauss at a radial distance of 5cm from the outside of the device However such fields can be sufficient to attract nearby objects such as knives and razor blades Should attraction of such objects begin to occur there would be a strong attractive force directing these objects towards the interior of the magnet housing This could be particularly likely to result in injury e g a cut or puncture wound if such attraction occurred while the device was being handled particularly if a body part of the operating personnel is near a beam aperture i e end of the device To minimize the above risks remove all loose ferromagnetic objects
19. our website Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 13 of 13
20. rable for a period of one year after date of original shipment The foregoing warranties shall not apply and EOT reserves the right to refuse warranty service should malfunction or failure result from a Damage caused by improper installation handling or use b Unauthorized product modification or repair c Operation outside the environmental or damage specifications of the product d Contamination not reported to EOT within 30 days of the original ship date This warranty is exclusive in lieu of all other warranties whether written oral or implied EOT specifically disclaims the implied warranties of merchantability and fitness for a particular purpose In no event shall EOT be liable for an indirect incidental or consequential damages in connection with its products If the customer believes there is a problem with the rotator isolator they should immediately contact EOT s Sales Customer department at 231 935 4044 or customerservice eotech com EOT s Customer Service department will either issue an RMA for the device or provide the customer with a procedure and authorize the customer to modify the device All returns should reference the RMA number on the outside of the shipping container and should be sent to Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www ecotech com Page 11 of 13 ESOT Electro Optics Technology Inc A
21. ssion axis scribe line is aligned with the line labeled B then the device is nominally adjusted to operate optimally at 1045nm Again the dot on the output polarizer mount denotes the side of the output PBSC to which backward propagating i e isolation direction light will get directed In the case shown this direction is upward and to the left Figure 6 shows a Faraday Isolator configured for positive Z rotation Again when the polarization transmission axis scribe line is aligned with the line labeled 1030 the device is nominally adjusted to operate optimally at 1030nm However if the polarization transmission axis scribe line is aligned with the line labeled A then the device is nominally adjusted to operate optimally at 1045nm Conversely if the polarization transmission axis scribe line is aligned with the line labeled B then the device is nominally adjusted to operate optimally at 1010nm Again the dot denotes the side of the output PBSC to which backward propagating i e isolation direction light will get directed In the case shown this direction is upward and to the right Electro Optics Technology Inc 5835 Shugart Lane Traverse City MI 49684 231 935 4044 800 697 6782 Fax 231 935 4046 sales eotech com www eotech com Page 5 of 13 EOT Faraday Isolators are factory aligned as per the model number specified in a purchase order The information below shows the range for each field in the
22. ttn Sales Customer Service 5835 Shugart Lane Traverse City MI 46984 USA EOT reserves the right to inspect rotators isolators returned under warranty to assess if the problem was caused by a manufacturer defect If EOT determines the problem is not due to a manufacturer defect an example would be damage to an optical element caused by impact from a loose ball driver or exceeding the damage threshold of the device repairs will be done at the customer s expense EOT will always provide a written quote for repair prior to performing repairs at the customer s expense Never attempt to disassemble the magnetic housing of your Faraday Rotator Isolator Injury could result Any indications that an attempt to disassemble the magnetic housing was made will render the warranty null and void VIII Specifications 1010 1080nm Faraday Rotators and Isolator 1010 1045nm 1045 1080nm Rotator Rotator Transmission at 22 C gt 98 gt 98 Isolation at 22 C N A N A Rotation at Specified Wavelength 45 2 45 2 Pulsed Damage 10J cm at 10ns 10J cm at 10ns Threshold 1J cm at 8ps 1J cm at 8ps a CW damage threshold is 1MW cm 1010 1045nm 1045 1080nm Isolator Isolator gt 92 gt 92 gt 30dB gt 30dB 45 2 45 2 10J cm at 10ns 10J cm at 10ns 1J cm at 8ps 1J cm at 8ps Transmission 100 0 90 0 80 0 70 0 60 0 Typical Isolator Performance 50 0 40 0 30 0 20 0
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