预览加载中，请您耐心等待几秒...

基于双曲面基底微透镜阵列的半导体激光器整形系统设计.docx

预览
1/2
2/2

在线预览结束，喜欢就下载吧，查找使用更方便

下载提示 文本预览

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

基于双曲面基底微透镜阵列的半导体激光器整形系统设计 Abstract: Inrecentyears,semiconductorlasershavegainedsignificantattentionduetotheirvariousapplicationsinopticalcommunication,materialprocessing,andmedicaltreatments.However,thebeamqualityofsemiconductorlasersisoftenlimitedbytheinherentcharacteristicsofthelaserdiode,suchasthehighdivergenceangleandspatialcoherence.Toovercometheselimitations,thedesignofasemiconductorlasershapingsystembasedonahyperbolicsurface-basedmicro-lensarrayisproposedinthispaper. 1.Introduction Semiconductorlasershavebecomeavitalcomponentinvariousfieldsduetotheircompactsize,lowcost,andhighefficiency.However,theirapplicationisoftenlimitedbythequalityofthelaserbeam.Thefundamentallimitationarisesfromtheellipticalshapeofthelaserdiode'sactiveregion,whichresultsinalargedivergenceangleandpoorspatialcoherence.Thesepropertiesleadtoalow-qualitylaserbeamwithawidebeamwaistandnon-uniformintensitydistribution.Toaddresstheseissues,ashapingsystemusingahyperbolicsurface-basedmicro-lensarrayisproposed. 2.DesignoftheSemiconductorLaserShapingSystem Theproposedshapingsystemconsistsofahyperbolicsurface-basedmicro-lensarray,whichisdesignedtoreshapethedivergentbeamemittedfromthelaserdiode.Thehyperbolicsurfaceofeachmicro-lensiscarefullydesignedtotransformtheellipticalbeamintoaGaussian-shapedbeamwithimprovedbeamquality. 3.PrincipleofOperation Theoperationprincipleofthesemiconductorlasershapingsystemisbasedontheprincipleofbeamshapingusingmicro-lensarrays.Whenadivergentbeamfromthelaserdiodepassesthroughthehyperbolicsurface-basedmicro-lensarray,themicro-lensesreshapethebeambyintroducingspecificphasedelaysandphasegradients.Asaresult,thebeamistransformedintoaGaussian-shapedbeamwithreduceddivergenceangleandimprovedspatialcoherence. 4.SimulationResults Toevaluatetheperformanceoftheproposedshapingsystem,numericalsimulationsareconducted.Thesimulationresultsdemonstratethatthehyperbolicsurface-basedmicro-lensarrayeffectivelyreshapesthelaserbeam,improvingitsqualitysignificantly.Thesimulationresultsalsoshowasu