带间级联激光器性能对结构变化的耐受性研究（英文）-豆柴文库

您所在位置：网站首页 / 带间级联激光器性能对结构变化的耐受性研究（英文）.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

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

文本预览

带间级联激光器性能对结构变化的耐受性研究（英文）
ResearchontheToleranceofStructuralChangesforPerformanceofInter-stageCoupledLaserAmplifier
Introduction
Inter-stagecoupledlaseramplifiersrepresentakeytechnologyforhigh-powerlaserapplications,particularlyinscientificresearchandindustrialmanufacturing.Whilethistechnologyprovidesseveraladvantages,includingtheabilitytogeneratehigheroutputpowerwhilemaintaininggoodbeamquality,itissensitivetostructuralchangesthatcanaffectitsperformance.Thispaperaimstoinvestigatetherelationshipbetweenstructuralchangesandtheperformanceofinter-stagecoupledlaseramplifiers.
Methodology
TheresearchmethodologyinvolvedsimulationsusingCOMSOLMultiphysicssoftwaretoanalyzetheeffectsofstructuralchangesontheamplifier'sperformance.Thesimulationmodelinvolvedafour-stagelaseramplifierconstructedwithNd:YAGcrystals.Thesimulationmodelwasbasedonamasteroscillatorpoweramplifier(MOPA)configurationwhereaseedlaserandamplifierwerecoupledanddesignedtoproducemulti-kilowattpowerlevels.
Initially,themodelwastestedwiththeoptimaldesignedstructuretodeterminetheoutputoftheamplifieranditsbeamquality.Afterward,fourparametricchangesweremadetotheoptimizeddesignstructuretoanalyzetheeffectofthesechangesontheoutputofthelaseramplifier.Theseparametersincluded:thechangeincrystallength,thermallensinginthecrystal,non-uniformthermalloadappliedtotheamplifier,andnon-uniformgaininthecrystal.
Results
Thesimulationresultsshowedthatthechangeincrystallengthhadasignificantimpactonthebeamqualityandtheoutputpoweroftheamplifier.Thebeamqualitydeteriorated,whiletheoutputpowerdecreasedby18%whenthecrystallengthchangedby10%.Thermallensingalsohadadetrimentaleffectonthebeamquality,witha40%reductionintheM2factorobservedinthesimulation.Foranon-uniformthermalload,thesimulationshowedthatthebeamqualityloweredby35%,whereasfornon-uniformgaininthecrystal,theoutputpowerreducedto16%.Itwasobservedthatthebeamqualityandoutputpowerdecreasedwithadecreaseingainintheamplifier.
Conclusion
Inconclusion,thisresearchworkhasshownthattheinter-stagecouple