Cateye OS 1.1 Spezifikationen

Cateye External Cavity Diode LaserModel CEL002Revision 1.00

RoHS Certification ofConformanceMOGLaboratoriesPtyLtdcertifiesthattheMOGLabsExternalCav-ity Diode Laser does not fall underthescopedefinedinRoHS Di-recti

ContentsPreface iSafety iiiProtection Features viiRoHS Certification of Conformance viii1 Introduction 11.1 External cavity . . . . . . . . . . . . . .

x ContentsB Connector pinouts 23B.1 Headboard . . . . . . . . . . . . . . . . . . . . . . . . . 23B.2 Laser . . . . . . . . . . . . . . . . . . . . .

1. IntroductionSemiconductor laser diodes arecompact, efficient and low-cost, butusuallyhavepoorwavelengthcontrol,linewidthandstability. Theaddition of

2 Chapter 1. Introductionisusedtoselectasingleexternalcavitymode. Withouttheneedforilluminatingalargeareaofagratingforfeedback,acat-eyeretroreflector a

1.2 Mode competition 3ternal cavity determines the lasing wavelength.The external cavityistypicallyaround40mmlongfromrearfacetofsemiconductortooutputc

4 Chapter 1. Introduction384.0 384.1 384.2 384.3 384.4 Frequency (THz) External cavityDiode cavity Diode gain COMBINED FilterFigure 1.3: Schematic

2. First lightInitialinstallationofthelaseristypicallyamatterofmountingittoanopticaltableandconnectingtoaMOGLabscontroller. Thelaser canbemounted topo

6 Chapter 2. First lightItisassumedthataMOGLabsDLCcontrollerwillbeusedtodrivethelaser. Ifanalternativesupplyisused,notethat+5Vmustbeprovidedonpin15oft

2.2 Current 72.2 CurrentThe outputof semiconductorlaserdiodesfollowa nominallylinearpowervs. currentrelationship,oncethecurrentisaboveadevice-specifict

Limitation of LiabilityMOG Laboratories Pty Ltd (MOGLabs)does notassume anyliabil-ityarisingoutoftheuseoftheinformationcontainedwithinthismanual. This

8 Chapter 2. First light

3. AlignmentThecateyereflectorarrangementisself-aligning,andshouldnotrequireadjustment.However,laserdiodeshaveafinitelifetime,anddiode replacementmay ne

10 Chapter 3. Alignment9mm diode5.6mm diodeLensRetainingringFigure 3.1: Lenstube assembly,showing diode,lens, andmounting hard-ware.The same tubecan b

3.2 Initial diode test 11distance.9. Rotatethecollimationassemblyandadjustthealignmentscrewsuntil the beam remains reasonably well on-axis.10. Tighten

12 Chapter 3. AlignmentEFrom diode FilterθFigure 3.3: Orientationofthediodelaserbeamellipsewithrespecttothefilter rotation, for TE polarised diode, ori

3.4 Cateye reflector 1335mmLens tube Cateye RecollimatorFigure 3.4: Arrangement oflens tube andcateye reflectorfor adjustmentof focus of cateye.blyatabo

14 Chapter 3. Alignment7. Ifpossible,scanthelaserthroughanatomicresonanceandview the absorption on an oscilloscope. With current biasdisabled (DIP4on

4. OperationNormaloperationofthelaserisusuallyamatterofadjustingthefilterrotationangletoselectthecorrectwavelength,andadjust-ing thepiezo offset,diode i

16 Chapter 4. OperationFigure 4.1: SketchoftheMOGLabs CEL,showingthe filterrotationad-justment screw, labelled λ.4.2 ScanningTheexternalcavitylengthisc

4.2 Scanning 17Frequency (GHz)Relative Gain100100-100-200 200Figure 4.2: Combinedgainforanexternalcavitydiodelaser,includingtheinternalandexternalmod

PrefaceDiodelaserscanbewonderfulthings: theyareefficient,compact,low cost, highpower, low noise, tunable, andcover a large range ofwavelengths.Theycanal

18 Chapter 4. Operation4.3 External modulationThelaserdiodeinjectioncurrentcanbemodulateddirectly,orviatheSMA RF inputonthelaserheadboard(seesectionB.

A. SpecificationsParameterSpecificationWavelength/frequency780nm50mW standard. Up to 150mW outputpower available.369.5 – 1120nmPlease contact MOGLabs fo

20 Appendix A. SpecificationsParameterSpecificationThermalTEC±14.5V3.3A Q =23W standardSensorNTC 10kΩ standard; AD590, 592 optionalStability at base±1mK

A.1 RF response 21A.1 RF responseThe laserincludesanRFbiastee,withtypicalfrequencyresponseshownbelow.Bydefault,theconnectiontothelaserdiodedoesnotprov

22 Appendix A. Specifications

B. Connector pinoutsB.1 HeadboardThe laser head interface board provides connection breakout to thelaserdiode,TEC,sensor,piezoactuators,andlaserheadin

24 Appendix B. Connector pinoutsLaserThermistor +Thermistor -Peltier +Peltier -Stack Piezo +Stack Piezo -Disc Piezo +Disc Piezo -Laser -Laser +Relay -

B.2 Laser 25B.2 LaserWARNING: TheLASER connectorisastandardDVI-DDual Linksocketasusedforconsumerdigitaldisplaydevices.Itshouldonlybeconnectedtothecorr

26 Appendix B. Connector pinoutscutoff.For higherbandwidths,use an external bias-tee such as theMinicircuitsZFBT-6G+between the head board and the diod

Bibliography[1] Daniel J. Thompsonand Robert E. Scholten.Narrow linewidthtunableexternalcavitydiodelaserusing widebandwidth filter.Review of Scientific

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[9] G. C. Bjorklund. Frequency-modulation spectroscopy: anewmethodformeasuringweakabsorptionsanddispersions.Opt. Lett., 5:15, 1980.18[10] R. W.P.Dreve

MOG Laboratories Pty Ltd18 Boase St, Brunswick VIC 3056, AustraliaTel:+61 3 9939 0677 [email protected] 2010 – 2014Productspecificationsanddescription

Safety PrecautionsSafeandeffectiveuse ofthisproductisveryimportant.Pleasereadthefollowinglasersafetyinformationbeforeattemptingtooperatethelaser. Alsop

ivthe keyswitch isin the STANDBYposition. The keycannot beremoved from thecontroller when itis in theclockwise (RUN)position.• Tocompletelyshutoffpower

vModel number:ECD-003Serial number:A22033021102-01Manufactured:JULY 2011Complies with 21 CFR 1040.10, and 1040.11 except for deviations pursuant to La

viAVOID EXPOSUREVISIBLE AND INVISIBLE LASER RADIATION ISEMITTED FROM THIS APERTUREAperture label engravingIEC 60825-1:2007AS/NZS 2211.5:2006INVISIBLE

Protection FeaturesMOGLabslasersincludesanumberoffeaturestoprotectyouandyour laser.Protection relay Whenthepowerisoff,orifthelaserisoff,thelaserdiodeis