宽带荧光和频效应的理论分析与模拟

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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