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ID:36624764
大小:2.14 MB
页数:53页
时间:2019-05-13
《宽带荧光和频效应的理论分析与模拟》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、南开大学硕士学位论文宽带荧光和频效应的理论分析与模拟姓名:陈凯申请学位级别:硕士专业:光学指导教师:赵丽娟20090501AbstractThebirthandthedevelopmentoffemtosecondlasertakepeopleintoanewfemtosecondworld,whereallthehi曲-speedoperationoftheparticlesare”slow”down.Themostdirectuseoffemtosecond1aseristhetime.resolvedspectra.Usingfemtosecondlaserpul
2、sestoobservephysical,chemicalandbiologicalultra-fastprocesses,peopleCanseealargenumberofphysical,chemicalandbiologicalfieldofultra—fastphenomenaandprocesses,whichtheyCallnotseebyusingtraditionalmethods.Time—resolvedspectrumbyfemtosecondlaserpulsesaccesstomoreandmoreattention,andnowinasta
3、geofrapiddevelopment.Andtheup-conversionfluorescencemeasuredoffemtosecondtime—resolvedspectroscopy,whichcallchooseadifferentnarrow-bandnonlinearopticalcrystaltoobtainhighconversionefficiency,ortoabtainrelativelyflatconversionefficiencyofbroadbandfluorescence,anddonotrequirethefluorescenc
4、elifetimeofthesamples,andCancalibratethespectraldataeasily,makeittobecomethemostwidelyusedmethodsoffemtosecondtime.resolvedspectralmeasurement.Inthispaper,basedontheprincipleofnonlinearoptical,theoreticalanalysisandsimulationofup—conversiontime-resolvedspectra,Icarriedoutseveralstudiesab
5、out:Describesthemostcommonlyusedfemtosecondmeasurementsandanalysisadvantagesanddisadvantagesmethods.time-resolvedspectraofthesemeasurement2、Fromtheprincipleofnonlinearoptical,Igottheformulaofeffectivenon—linearcoefficientofthenonlinearopticalcrystal,andusedmatlabprogrammingforsolvingdisp
6、ersioncurvesofeffectivenon-linearcoefficientofBBOcrystalintheprocessofSHGsndSFGaswellasgettingimpactofeffectivenonlinearcoefficientofBBOcrystalbychangingthematrixelementoftheeffectivenonlinearcoefficientofBBOcrystal.3、TosolveupconversionluminescenceefficiencyoftheSFGbyusingthetheoryofsma
7、ll—single,and舶mthis,toanalysisandsolvetherelationshipamongtheupconversionluminescenceefficiencyandphasemismatchfactor,crystalthicknessⅡAbstractandgatepulselightintensityaboutBBOcrystal,fromwhichwegetthebestexperimentalconditionsoflheupconversion1uminescence.Andusethebestc
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