稳频的高功率426nm倍频激光器-豆柴文库

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稳频的高功率426nm倍频激光器
I.Introduction
Inrecentyears,high-poweredbluelasershavebecomeincreasinglypopularinvariousindustries.Withitsshortwavelengthandhighphotonenergy,bluelasershavefoundapplicationsinfieldssuchassemiconductorprocessing,medicalequipment,andhigh-precisionmeasurement.Oneofthemostcommonlyusedbluelaserwavelengthsis426nm,whichisgeneratedbyfrequencydoublinganear-infraredlasersource.Thispaperwilldiscussthedesignandoperationofahigh-powered426nmfrequency-doubledlaser,withaparticularfocusonthestabilityandconsistencyofthelaseroutput.
II.DesignoftheLasersystem
Thebasicdesignofa426nmlasersysteminvolvesusinganear-infraredlasersourceandanonlinearcrystaltoperformfrequencydoubling.Thelasersourceistypicallyahigh-powerdiode-pumpedsolid-state(DPSS)laserwithawavelengthofaround852nm,whichisthendirectedintoanonlinearcrystaltodoubleitsfrequencyto426nm.Toachievehighpowerinthebluewavelength,multiplecrystalscanbestackedtoincreasetheintensityofthelightgoingintothenonlinearcrystal.
Thepoweroutputofafrequency-doubledlasersystemishighlydependentonthestabilityandalignmentoftheopticalcomponents.Asmalldeviationinthealignmentortemperatureofthecrystal,forexample,canseverelyimpacttheoutputpowerandwavelengthstabilityofthelaser.Inordertoensurehigh-qualityoutput,theentirelasersystemishousedinastable,temperature-controlledenclosure.
III.OperationoftheLasersystem
Theoperationofahigh-powered426nmfrequency-doubledlasersystemiscomplex,andrequirescarefulcontrolofmultipleparameters.Oneofthemostimportantfactorsaffectingtheoutputpoweristheinputpowerofthenear-infraredlasersource.Typically,themorepowerthatisputintothelasersystem,themorepowercanbeachievedattheoutput.However,thismustbebalancedagainsttheriskofdamagingthenonlinearcrystalduetoexcessiveheatorintensity.
Thetemperatureofthenonlinearcrystalisalsocrucialforstableoperationofthelasersystem.Athighpowerlevels,thecrystalcanheatupandcausechangesinitsrefractiveindex,leadingtochangesinthepolarizationandoutputpowerofthelaser.Therefore,aprecisetemperaturecontro