Laser Education Kit CA-1200 HeNe Laser User Manual
Contents
1. other mirrors prisms or filters are used like in the full version of this system it is classified according to DIN IEC 60825 1 asa Class 3B Laser in the full version It is recommended to use the appropriate laser safety goggles in addition OR with protective sides against laser stray light caused by additional optics during the measurements The carryout of the measurements with the system may be done only by adequate instructed people copyright 2012 PI miCos GmbH Freiburger Stra e 30 79427 Eschbach Germany www pimicos com Page 4 Helium Neon Laser PImiCos campus CA 1200 2 Description of elements Page 5 PImiCos campus CA 1200 Part 1 Profile Rail basic and full version The complete set up will be mounted on a 1000 mm optical rail which is reinforced by an additional profile rail to increase the mechanical stability of the laser resonator Part 2 HeNe Laser Tube with power supply basic and full version The used special HeNe Laser tube has Brewster angle windows at both ends mounted This makes possible to set up a HeNe laser with external resonator mirrors for educational purposes The tube itself is built in two XY adjustment holders on a carrier base The power supply for the tube is firmly connected and supplies the tube with its nominal values for current and voltage Part 3 4 Laser mirror adjustment basic and full version These components hold the resonator mirrors and give the us2. 0 315 amps 4 3 2 The power supply is rigidly coupled with the laser head by a power cable En sure a tension free guiding and don t pull on the cable Laser head connection Page 11 Caution Dangerous laser emission may appear when installing or operating the laser system Therefore it is necessary to arrange safety precautions and to follow the appropriate laser safety instructions copyright 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Page 12 5 Adjustment of the laser 5 1 Definition of the optical axis 5 NE ON copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com The very first job which must be done is the definition of the optical axis of the laser system For this purpose place the holder 5 with the target screen insert remove the photo detector and the alignment laser 6 on the optical rail 1 like shown in the draft above Switch on the adjustment laser and check if the laser beam hit roughly the center of the target insert 5 Small corrections can be done by turning the housing of the adjustment la ser in its holders Once the laser is adjusted the optical axis is defined and no further move ment of the laser should be done while proceeding the following adjustment steps Page 13 PImiCos campus CA 1 200 3 2 Pre adjustment of the laser mirrors Helium Neon Laser Adjustment of the laser The laser mirror
3. Fotoempfindlichkeit Lo 5V Spectral sensitivity Wellen nge der max Fotoempfindlichkeit Wavelength of max sensitivity opektraler Bereich der Fotoempfindlichkeit S 10 von Smax Spectral range of sensitivity S 10 Of Smax Bestrahlung sempfindliche FI Sche Radiant sensitive area Abmessung der bestr ahlung sempfindlichen FiSche Dimensions of radiant sensitive area Abstand Chipoberfl Sche zu Geh Suseober flSche Distance chip front to case surface Halbwinkel Half angle Dunkelstrom Vp 10 V Dark current Semiconductor Group BPX 61 Symbol W ert Einheit Symbol Value Unit Ig D40 4125 C l l Symbol W ert Einheit Value Unit 70 2 50 nA lx Symbol Asmax 850 nm 400 1100 nm 7 00 mm 2 65 x 2 65 mm mm Grad H N IA Qo 2 Q D nA 6 Em Ew S a gt o X X 3 CA 58 Version 1 12
4. adjustment holder 4 is placed on the optical rail as shown in the draft above Insure that the well cleaned plane laser mirror marked with PLAN is mounted in the holder The laser mirror has to be adjusted with the adjustments screw in that way that the back reflected beam of the adjustment laser hits itself exactly at its beam output aperture The perfect alignment to the defined optical axis can be recognized by ob serving a flickering laser beam caused by interference effects with the plane mirror in the holder copyright 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com The procedures for the other laser mirror adjustment holder 3 are similar Use the laser mirror marked with FL1000 clean it and screw it into the ad justment holder Place the holder in a 180 flipped position mirror surface points to the adjustment laser elimination of wedge effects around 500 mm in front of the adjustment laser like shown in the sketch above Due to the curvature of this laser mirror 1000 mm the observed interfe rence effects are more divergent Adjust the beams centered around the output aperture of the adjustment laser If the alignment is finished remove both adjustment holders from the opti cal rail and place it beside Page 14 PImiCos campus CA 1 200 5 2 Adjustment of the ma n laser tube Some sample beam shapes Tube is not well centered d I Tube is perfectly centered The
5. 00 mm basic and full version FL700 mirror curvature 700 mm full version OC 24 plane mirror output 2 4 full version Page 6 3 The Laser Tube Supply LTS 1500 3 1 General The enclosure of the controller LTS 1500 can be tilted with the help of two hinged feet at its bottom The air vents at the top and the bottom of the enclo sure may not be covered A sufficient free air circulation is ensured if there is a free space of 100 mm all around the enclosure Opening the enclosure may be done disconnected from mains by authorized people only Local Remote O LTS 1500 MAC Photonx copyright 2012 PI miCos GmbH Freiburger Stra e 30 79427 Eschbach Germany www pimicos com Page 3 2 Front Panel Controls 3 2 1 Section Laser Power The key switch at this section is allows only permitted people to get the la ser started This key fulfills the standard DIN EN 60825 1 3 2 2 Section Tube Current With the push buttons 4 w at this section the tube current can be set in steps of 0 1 mA The actual tube current is shown at the display in mA 3 2 3 Section Photo Diode The push buttons 4 w at this section set the gain of photo diode am plifier The photo diode part 5 must be connected at the BNC socket at the rear panel of the controller The gain of the amplifier is indicated by a LED bar The shown value at the display corresponds to the relative output power of the laser and can be used as an aid to get an opti
6. E She Diresringent Filter Bl Ver SION cseteris uu cuta ppt mns Ded en imet t maus ee A ES 18 Adjustment of THE Etalon T ll version ERE e 19 MEASUREMENTS WITH THE LASER SYSTEM eeeeeee eee 20 Output power versus laser tube CUPP SINT EE 20 OBricalstab li Ir anrea OF T he Pe SODOTODL E 20 Beam diameters inside The EE 20 JUD power VERSUS laser Tube position E 21 Mode SIC CS E RETRO m m 21 Single mode operation with etalon full VERSION PR 21 Wavelength selection with birefringent filter full version oc cesscsessesesseseseecescesescssescsesesssessssesessessssessssessssessssessssessssesssscssseesssecsssecsssecssecssecseeeeaseeeseeeeseeeeseeeeaees 21 Wavelength selection with Littrow prism full version 21 Infrared wavelength operation optional 21 7 RECOMMENDED LITERATURES eseseseelelses esses 22 8 PHOTO DIODE DATA SHEET 23 copyright 2012 PI miCos GmbH Freiburger Stra e 30 79427 Eschbach Germany www pimicos com Page 3 1 Laser Safety Precautions The delivered laser system as well as the adjustment laser part 6 are The following sign posts must be installed marked visible close to the classified according to DIN TEC 60825 1 as a system Class 2 Laser in the basic version without output coupler mirror If additional optics like output mirrors
7. FP around its optical axis until the laser starts again Optimize the laser again Next step is turning the plate itself to the Brewster s angle in several steps with realigning the laser in between If the Brester s angle is achieved the laser output power increases noticeable If the BFP is rotated around it optical axis you can see the main line 632 8 nm up to 4 times The strongest one should be chosen and the laser should be optimized again copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser Adjustment of wavelength selectors If the birefringent filter is rotated in small angles around chosen main line you can get 4 additional wavelengths with different gains according to the table below No Wavelength Gain 1 611 8 nm 10 2 629 8 nm 20 3 632 8 nm 100 4 635 2 nm 6 9 640 1 nm 34 The line no 1 at 611 8 nm and the line no 4 at 635 2 nm are very sensitive to pollution on the optics To get these lines it is very important to clean the optics and the Brewster windows of the laser tube very carefully Once the orange line is oscillating realign the laser and optimize the Brewster s angle of the BFP The weak lines can disappear and appear again by turning the bi refringent filter plate Page 18 PImiCos campus CA 1 200 5 6 Adjustment of the Etalon full version The part 9 with the single mode etalon will be placed on the rail instead of the BFP 8 afte
8. PI mitos pPI mios 7 LTS 1000 e gt campus User Manual Pi micos LTS 1500 campus P L F 000 7 S ATON om e 45 A LASE d FLA FeS TIONS ee s M Je w Led 2 7 208 GTOUND STATE Laser Education Kit CA 1200 Hehe Laser CONTENTS SNE CR DRI RR RR RN DOR RD OND OND RIDE SE REED RED RR INR NR NUR RD UDN DR RD 7 Se From usi R6 o URN ct 8 321 ETON E ONE ee Ee 8 32 2 Secllon HERE eege 8 323 Section Photo oro EE 8 324 Section Laser eu d EN 8 C RS OS res etn noc 9 3 3 1 Mains connection Ek d EE 10 932 oat a e Tor PROTO CIO ni ie 10 SEENEN 10 4 THE LIGHT SOURCE CONTROLLER LSC 2000 cc ccc ccc cece eens 11 ER ee E PD RR DON EAE RU DESEN O PDR UDN DDR O ENE UDN A PAES VENDE RUE DID ED RDI HERE RDNS EN SEN PORNOS REU RN ESSE PE E 11 42 ECL OOO Front 6 41 EEN 11 SAN E el TEE 11 422 SECU ONL an SOURCE E 11 AS SC 2000 Rear PANE EE 11 o Mans CONNCCTOR eebe 11 4 3 2 Laser head connection E 11 copyright 2012 PI miCos GmbH Freiburger Stra e 30 79427 Eschbach Germany www pimicos com Page 2 5 ADJUSTMENT OF THE LAaER ecran eres 13 9 1 3 2 5 2 5 3 5 4 5 5 5 6 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 Definition of det 13 Pre ad unen ro The laser N CONS nee ee pa ee 14 Adjusimenr ofthe TT 15 Ger the main laser oS MON EE 16 Adjustment of the Littrow prism full version eu 17 EIER
9. e and the main laser should be in well optimized laser oscillation The used mirror pair can be the FLAT amp FL1000 or the other pair consisting of FLAT amp FL700 Within this measurement a diagram is taken The x axis is plotted with steps of the tube current in milliamps varied from 5 0 to 6 5 by the a keys The values for the y axis are read from relative output power display of the photo amplifier Please note The gain of the photo diode amplifier should be set to a value where no saturation of the amplifier can occur It can be easily checked by varying the gain with following variation of the tube current range If the output coupler mirror is used the fluorescence light of the laser tube becomes influence to measurement For this case two measures should be subtracted one with laser operation and the other one without laser operation can be interrupted by putting a piece of paper in front of the right laser mirror Rem The influence of the tube current to the output power is very weak copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser LDS 1200 6 2 Optical stability area of the resonator As well as the while the measurement before the adjustment of the laser according up to chapter 5 3 must be carried out The measurement of the area of resonator stability itself can be done with both mirror sets FLAT amp FL1000 or FLAT amp FL700 For this purpose the
10. er the possi bility to adjust them in the perpendicular axes The mirror can be ex changed very easily to meet the demands for the corresponding measure ment Part D Photo detector in holder full version The used PIN photodiode is mounted in a housing with a BNC socket for the connection to the photo diode amplifier The connection will be done with the help of a provided BNC cable to the amplifier included in the laser tube power supply copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser Description Part 6 Alignment laser with power supply basic and full version The alignment laser is a 1 mW HeNe laser in holders Its output beam is centred to the mechanical centre of its housing The laser is used to define the optical axis of the system All further alignments of the educational kit base on this axis Part 7 Birefringent tuner full version A disc of natural birefringent quartz is mounted in an rotator unit which al lows the tuning of different wavelength in the laser system Part 8 Littrow prism tuner full version A high quality Littrow prism is provided for laser wavelength selection Part 9 Single mode etalon full version Single mode Etalon with adjustment holder The Etalon has a diameter of 12 7 mm and a thickness of 10 mm Part 10 Set of laser mirrors in mount PLAN plane mirror basic and full version FL1000 mirror curvature 10
11. if one re sonator mirror will be something misaligned Higher modes are recognized by a intensity distribution with areas where the light intensity converges to zero If no structures can be obtained by a trick Insert a so called optical short circuit into the laser beam a very thin wire or a human hair will give good results and the distribution of laser light which look like higher laser modes become visible copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser LDS 1200 6 6 Single mode operation with etalon full version Follow the remarks and descriptions in Chapter 5 6 6 7 Wavelength selection with birefringent filter full version Follow the remarks and descriptions in chapter 5 5 Please note For this experiments absolutely clean optical surfaces are un conditional necessary The alignment must be done very accurate and expe rienced 6 8 Wavelength selection with Littrow prism full version Follow the remarks and descriptions in chapter 5 4 Please note For this experiments absolutely clean optical surfaces are un conditional necessary The alignment must be done very accurate and expe rienced 6 9 Infrared wavelength operation optional This feature is optional available CA 1205 to the educational kit The set consists of two laser mirror which are coated for infrared opera tion of the laser The adjustments are similar to adjustments for the visi b
12. ke it was done while adjusting the laser mirrors Helium Neon Laser Adjustment of wavelength selectors Now the parts 2 amp 3 can be assembled again Switch off the adjustment la ser 6 and switch on the main laser 2 If the laser oscillation doesn t start again continue with the wobbeling procedures of component 3 a amp bas men tioned in the chapter of the adjustment of the main laser oscillation before These alignments are much more sensitive than the ones before and should be carried out very careful The cleaning of the optics is tremendously im portant If the laser starts oscillating optimize it for very best intensity The laser line tuning can be done with the adjustment screws c amp d of the component 8 copyright 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Page 17 PImiCoscampus CA 1200 5 5 Adjustment of the birefringent filter full version Rotate the insert of part 8 to the Brewster s angle and configure the setup as shown in the left draft above Repeat the alignment of the laser mirror in part 4 to eliminate the beam displacement of the inserted optic If fi nished the setup can be completed again like in the right figure above Another way is to insert the birefringent filter directly into the working la ser resonator For this purpose align the resonator for best laser output and insert the part rotated perpendicular to the laser beam Rotate the B
13. le operation Better results are achieved if the adjustments are done in room with subdued light In this case the optical effects of the adjust ments in chapter 3 2 are visible much more better Even the results for starting up the laser oscillation are easier All measurements mentioned before can also be done with infrared configu ration The Littrow prism is not useable due to its optical coating The re sults of the use of the birefringent filter can be preferably observed with a monochromator Page 21 PImiCos campus CA 1 200 7 Recommended literatures in german language Wulfhard Lange Einf hrung in die Laserphysik Wissenschaftliche Buchgesellschaft Darmstadt 1983 Bergmann Schaefer Lehrbuch der Experimentalphysik Band 3 Optik de Gruyter 1993 Weber Herziger Laser Grundlagen und Anwendungen Physik Verlag 1972 Kleen M ller Laser Springer Verlag 1969 F K Kneub hl und M W Sigrist Laser Teubner Stuttgart 1988 copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser Literatures in english language O Svelto Principles of Lasers Plenum Press New York 1989 A E Siegmann Lasers University Press Oxford 1986 P W Milonni und J H Eberly Lasers John Wiley New York 1988 J Hecht The Laser Guidebook McGraw Hill Inc New York 1992 A Yariv Quantum Electronics John Wiley New York 1975 Page 22 SIEMENS Sili
14. mized adjustment of the laser 3 2 4 Section Laser Control This section is for future use copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Page 8 PImiCos campus CA 1200 Helium Neon Laser Laser Tube Supply LTS 1500 3 3 Rear Panel Controls Device LTS 1500 Ser No ss Sec G GmbH Freiburger Str 30 Voltage 79427 Eschbach GERMANY Fuse Page 9 copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com 3 3 1 Mains connection and switch Before the controller is connected to the line voltage it must be checked if the voltage specification at the nameplate at its rear panel is identical Make the mains connection with the provided mains cable and insure a prop er junction The value of the fuse in the power connector is 0 5 amps A spare fuse is delivered with the controller 3 3 2 Connector for photo diode The Photo detector Part 5 within full version has to be connected to BNC socket the rear panel with the delivered BNC cable 3 3 3 Laser tube connection The high voltage power supply is connected via a high voltage cable to the laser tube The cable is sensitive in bending with small radius Ensure a ten sion free guiding and don t pull the cable copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Page 10 PImiCos campus CA 1200 4 The Light Source Co
15. next step is the adjustment of the main laser 2 Adjust the tube rough ly to the center of its holders with the help of the X Y adjustment screws and put it on the rail like shown in the figure above Be sure that the Brew ster windows of the main laser 2 are well cleaned and its power supply is switched off The goal is to adjust the main lasers capillary around the optical axis of the adjustment laser with the X Y adjustment screws The actual position can be observed at a reflective screen like a piece of white paper or a white copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser Adjustment of the laser wall Best results are achieved if the distance of the screen is more than one meter Some sample results are shown in the drawing above The system must be aligned until the beam of the adjustment laser is perfectly centered with out any reflections at the main tube This is absolutely necessary for all further adjustments The better the adjustment is done the easier you get the very first oscillation of the laser Page 15 PImiCos campus CA 1200 5 3 Get the main laser oscillation Helium Neon Laser Adjustment of the laser Finally to get the laser light arrange the pre adjusted components 2 3 amp 4 like shown in the sketch above Inspect again the surfaces of the Brewster windows of the main laser 2 and of the laser mirrors 3 amp 4 if there are no co
16. ntamination like dust or fingerprints Switch off the adjustment laser 6 and switch on the main laser tube 2 with the key switch at the controller LTS 1500 If all the previous adjustments are done excellent the main laser starts immediately If no laser light can be observed a gentle twisting of max 45 of one of the adjustment screws shown in the draft above cause the oscillation flick copyright 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com er up This can be observed at the surface of one of the laser mirrors 3 or 4 If this alignment fails return the screw to the start position and twist the other one If you get the laser oscillation the output power can be optimized with the position of the laser mirrors 3 amp 4 and supplementary with the X Y adjust ments of the main tube 2 If still no laser oscillation can be observed start again from the beginning and check if the correct laser mirrors are mounted and if all the optics are clean Page 16 PImiCoscampus CA 1200 5 4 Adjustment of the Littrow prism full version After the basic adjustment of the main laser and achieved optimized laser operation carefully remove the components 2 3 amp 4 from the optical rail and avoid misalignment of them Place the adjustment holder with the Lit trow prism 8 onto the rail like shown in the left figure above Switch on the adjustment laser 6 and align the reflection of the Littrow prism li
17. ntroller LSC 2000 4 1 General Helium Neon Laser Adjustment of the laser The enclosure of the controller L TS 1500 can be tilted with the help of two hinged feet at its bottom The air vents at the top and the bottom of the enclo sure may not be covered A sufficient free air circulation is ensured if there is a free space of 100 mm all around the enclosure Opening the enclosure may be done disconnected from mains by authorized people only 42 LSC 2000 Front Panel PI micos LSC 2000 campus 4 2 1 A green LED indicates whether the mains power is switched on by the mains switch at the rear panel of the power supply LSC 2000 Section Line Power If the mains power is switched on the light sources are ready for ignition 4 2 2 Using a key switch the ability is given to only let an authorized person oper ate the laser This key fulfills the standard DIN EN 60825 1 Section Light Source Turning the key the DPSS laser is emitting green light of 532 nm wave length copyright 2012 PI miCos GmbH Freiburger Stra e 30 79427 Eschbach Germany www pimicos com 4 3 LSC 2000 Rear Panel 4 3 1 Before the power supply LSC 2000 is connected to the line voltage it has to be checked whether the line voltage matches the voltage indicated at the label at the rear panel Mains connector To insure a proper junction the provided mains cable has to be used The value of the fuse in the power connector is
18. of the laser tube are very sensitive on hits and scratching Be careful while these measurements are carried out Page 20 PImiCos campus CA 1200 6 4 Output power versus laser tube position Within this measurement the mechanical position of the laser discharge tube is varied and plotted at the x axis of a diagram The relative output power is taken from the display and plotted at the y axis For this measurement both mirror sets one after an other can be used The alignment of the resonator should be set to its stability minimum de pending of the used mirror set FLAT amp FL1000 or FLAT amp FL700 After every new mechanical position of the tube the laser should be optimized again in its out put power until the power value is taken As a result the variation of output power depending on the used mirror cur vatures related to the beam diameters is recognized and can be discussed afterwards Please nofe The laser must be adjusted according up to chapter 5 3 The same procedures for the set up of the photo diode amplifier as in chapter 6 1 mentioned should be carried out Part 5 photo detector only available in full version 6 5 Mode structures This experiment should be carried out by using a spherical resonator set up Viewing transversal laser modes can be achieved with the help of a lens with a focal length of appr 40 mm depending on the distance of a display screen to visualize the mode pattern The modes can be produced
19. r it has been adjusted with the screws in its holder to be roughly perpendicular to the optical axis of the laser If put into the reso nator the laser normally keeps its oscillation more or less strong If the back reflections at the mirror surface of component 3 are observed you can identify a non perpendicular adjustment with several spots copyright O 2012 PI miCos GmbH Freiburger StraBe 30 79427 Eschbach Germany www pimicos com Helium Neon Laser Adjustment of the Etalon The zero order adjustment is achieved if all reflections fall into the beam of the main laser Other orders can be adjusted by tilting one of the adjustment screws of the etalon holder 9 To check out if the laser is running in single mode an external fabry perot interferometer is necessary Page 19 PImiCos campus CA 1 200 6 Measurements with the laser system With Laser system CA 1200 the following measurements can be done Output power dependence on laser tube current Optical stability area of the resonator Beam diameters inside the resonator Output power dependence on laser tube position Furthermore mode behavior of the laser itself and in combination with an etalon will be investigated The reactions of the use wavelength influencing elements like filter and prism inside the laser resonator will be shown 6 1 Output power versus laser tube current For this measurement the basic alignment according up to chapter 5 3 must be don
20. spherical mirror normal ly part 3 is shifted on the optical rail away from the discharge tube step by step after the lock screw of the carrier with the mirror is slightly loo sened After every small step the laser should be realigned to maximum output If the stability limit is obtained the laser stop its laser oscillation and it is not possible to get laser light The found distance can be read out from the scale stuck on the optical rail The obtained value corresponds with the val ue of the laser mirror curvature The same procedures for the set up of the photo diode amplifier as in 6 1 should be carried out The results can be compared with the stability criterion of an optical reso nator in dependence of the resonator mirror curvature in the theory 6 3 Beam diameters inside the resonator The measurement of the beam diameters inside the resonator in depen dence of the curvatures of the used laser mirrors can be done by a caliper square To get the values the measure of the caliper square is made smaller and held into the resonator If the distance becomes too small no laser os cillation is seen The same procedure can be done several times inside the resonator until sufficient measurement points are obtained to draw a pro file of the internal beam divergence To receive a full profile the measure ments should be done on both sides of the laser tube between mirror and Brewster window of the tube Please note The Brewster windows
21. zium PIN Fotodiode Silicon PIN Photodiode Chip position Cothade Radiant sensitiva area Approx weight 2 g 8 Photo Diode Data Sheet BPX 61 MaSe in mm wenn nicnt angers angeg perV bimerisions in mm Uniess otnerwise specitiea W esentliche Merkmale e Speziell geeignet fYr Anwendungen im Bereich von 400 nm bis 1100 nm e Kurze Schaltzeit typ 20 ns e Hermetisch dichte Metallbauform Shnlich TO 5 Anwendungen e Lichtschranken f Yr Gleich und Wechsellichtbetrieb e IR Fernsteuerungen e Industrieelektronik e OMessen Steuern Regeln Typ Bestellnummer Type Ordering Code BPX 61 Q62702 P25 Semiconductor Group Features e Especially suitable for applications from 400 nm to 1100 nm e Short switching time typ 20 ns e Hermetically sealed metal package similar to TO 5 Application Photointerrupters IR remote controls Industrial electronics For control and drive circuits 357 10 95 SIEMENS Grenzwerte Maximum Ratings Bezeichnung Description Betriebs und Lagertemperatur Operating and storage temperature range L ttemperatur L tstelle 2 mm vom GehSuse entfernt bei L tzeit lt 3 s Soldering temperature in 2 mm distance from case bottom t lt 3s Sperrspannung Reverse voltage Verlustleistung 7 25 C Total power dissipation Kennwerte T 25 C Normlicht A T 2856 K Characteristics 7 25 C standard light A T 2856 K Bezeichnung Description
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