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ID:32327205
大小:3.17 MB
页数:47页
时间:2019-02-03
《bi3agaas可饱和吸收体全固态激光器的激光特性研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、万方数据山东大学硕士学位论文ABSTRACTDiode·-pumpedall··solid--statelasershavebeenwidelyusedinindustry,military,andscientificresearch,notonlyowingtoitscompactness,devicesimplicityandlowcost,butalsobecauseofitsoverallefficiency,highstability,etc.Andwiththehelpofintra-cavitysaturableelements.suchaSNd:YAC‘
2、GaAsandothersemiconductormaterialwithsaturableabsorptioncharacteristics,passivelyQ—switchingormode-lockingcallberealizedinall-solid·statelasers.Saturableabsorbershaveattractedsignificantattentionbecauseoftheircompactness,lowcostandsimplicityinopermion.Inrecentyears,GaAssemiconductorsatur
3、ableabsorberhasbecomeattractivebecauseofthelargeopticalnonlinearitiesandhasbeensuccessfullyusedinavarietyofsolid.statelasers.MlenGaAssemiconductorsaturableabsorberhasbeenusedforpassiveQ—switches,thesmallamountofabsorptioninthisregionisbelievedtobecausedbytheEL2defects.AndwhenGaAshasbeenu
4、sedinpassivelyQ—switchedandmode-lockedlasers,itisbelievedthatthetwo-photonabsorption(TPA)andfree—cartierabsorption(FCA)effectsplayanimportantroleinthepulseformationinGaAs.GaAsisagoodsaturablesabsorberandmanyeffortshavebeenmadetOimproveitsperformance.Asweallknow,alloyingisaneffectivewayof
5、modifyingthepropertiesofamaterial,andBismuthdopinginGaAsisaneffectivewayofmodifyingitselectronicandopticalproperties.Sointhisthesis,byusingBi—dopedGaAsassaturableabsorber,whichisproducedbyionimplantation,diode-pumpedNd:GGGlasersat1064nmisrealizedforthefirsttime,whichmainlyincludes:Inchap
6、ter1,thedevelopmentsofthesolid—statelasers,passivelyQ—switchedandmode··lockedtechnologyhasbeenintroduced;thefundamentalprincipleofQ··switchandmode-lockedlasershasalsobeengiven.Inchapter2,themechanismsforGaAsassaturableabsorberusedin1064nmlasershasbeendiscussedandthemainwaysforthemanufact
7、ureoftheBi-dopedGaAshavebeenanalyzed.TheBi—dopedGaAsusedinthispaperisproducedbyion111万方数据山东大学硕士学位论文implantation,anditsparametersaSsaturableabsorberhavebeenresearched.Inchapter3,byusingBi—dopedGaAsaSsaturableabsorber,adiode-pumpedpassivelyQ·swtichedNd:GGGlaSerat1064nlnhasb
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