comsol仿真高斯光束

1、SolvedwithCOMSOLMultiphysics5.2SolvedwithCOMSOLMultiphysics5.2 IDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSIIIDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSIIIDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSPrescribedMeshDisplacement2OnthePhysicstoolbar,clickBoundaries

2、andchoosePrescribedMeshDisplacement.SelectBoundaries15-18only.0.20-0.2-0.406080.5I1.5-1-1.2-1.4-1.60.5I1.5IntheSettingswindowforPrescribedMeshDisplacementlocatediePrescribedMeshDisplacementsectionInthedxtextfieldtypexp-XgInthedytextfieldtypeyp-YgPrescribedDeformationIOnthePhysicst

3、oolbar,clickDomainsandchoosePrescribedDeformationIntheSettingswindowforPrescribedDeformation,locatedieDomainSelectionsectionFromtheSelectionlist,chooseLensLocatethePrescribedMeshDisplacementsection.Indiedxtext-fieldarraytypexpXgonthefirstrow.Inthedytext-fieldarray,typeypYgondie2ndrow.ELECTROMAGNETIC

4、WAVES,FREQUENCYDOMAIN(EWFD)InElectromagneticWaves,FrequencyDomain,thedielectricdistributionisconfiguredviatheuser-defiiiedvariableerpandtheGaussianbeamismodeledasenteringthedomainfromtheleftside,viaasurfacecurrentexcitationIntheModelBuilderwindowunderComponentI(compI)clickElectromagneticWaves,Freque

5、ncyDomain(ewfd)IntheSettingswindowforElectromagneticWaves,FrequencyDomain,locatetheComponentssectionFromdieElectricfieldcomponentssolvedforlist,chooseOut-of-planevectortoonlyperformthecalculationfortheout-of-plaiiecomponent.Thein-planecomponentsarebotlizero.WaveEquation,Electric2OnthePhysicstoolbar,

6、clickDomainsandchooseWaveEquation,ElectricIntheSettingswindowforWaveEquation,Electric,locatetheDomainSelectionsectionFromtheSelectionlist,chooseLensLocatetheElectricDisplacementFieldsection.FromtheElectricdisplacementfieldmodellist,chooseRelativepermittivity.Fromtherlist,chooseUserdefinedIntheassoci

7、atedtextfield,typeerpLocatetheMagneticFieldsection.Fromdieprlist,chooseUserdefinedLeavethedefaultvalue17LocatedieConductionCurrentsectionFromdieGlist,chooseUserdefinedLeavethedefaultvalue0.SurfaceCurrentDensityIOnthePhysicstoolbar,clickBoundariesandchooseSurfaceCurrentDensity.SelectBoundary10only.In

8、theSettingswindowforSurfaceCurrentDensity,locatetheSurfaceCurrentDensitysectionSpecifytheJsqvectoras0X0yexp(-(y/wO)A2)zMATERIALSSetalldomainwitlivacuum.ThelensdomainmaterialpropertiesareexplicitlyconfiguredbyWaveEquation,Electric2inElectromagneticWaves,FrequencyDomain.ADDMATERIALIOntheHometoolbar,cl

9、ickAddMaterialtoopentheAddMaterialwindow.GototheAddMaterialwindow.Inthetree,selectBuilt-lnAir.ClickAddtoComponentinthewindowtoolbar.MESHISizeIntheModelBuilderwindowunderComponentI(compI)right-clickMeshIandchooseFreeTriangular.IntheSettingswindowforSize,locatetheElementSizesectionClickdieCustombutton

10、LocatetheElementSizeParameterssection.IntheMaximumelementsizetextfield,typelda0/10.IntheMinimumelementsizetextfield,type0.0012.IntheModelBuilderwindow,riglit-clickMeshIandchooseBuildAll.YoumayzoominafewtimestocheckdiequalityofthemeshSTUDYIThemodelisanalyzedwitlitwostudystepsFirst,makesurethatStation

11、arystudystepissolvedonlyforDeformedGeometry.StepI:StationaryIntheModelBuilderwindowunderStudyIclickStepI:Stationary.IntheSettingswindowforStationary,locatethePhysicsandVariablesSelectionsectionInthetableenterdiefollowingsettings:PhysicsinterfaceSolveforDiscretizationElectromagneticWaves,FrequencyDom

12、ainphysicsAddaFrequencyDomainstudystepandsetassolvedonlyforElectromagneticWaves,FrequencyDomainFrequencyDomainOntheStudytoolbar,clickStudyStepsandchooseFrequencyDomainFrequencyDomainStep2:FrequencyDomainIIntheSettingswindowforFrequencyDomain,locatetheStudySettingssectionSolvedwithCOMSOLMultiphysics5

13、.2SolvedwithCOMSOLMultiphysics5.2SolvedwithCOMSOLMultiphysics5.2SolvedwithCOMSOLMultiphysics5.2IIIDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSIIIDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSIIIDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSIIIDEFININGAMAPPEDDIELECTRIC

14、DISTRIBUTIONOFAMETAMATERIALLENSSolvedwithCOMSOLMultiphysics5.2SolvedwithCOMSOLMultiphysics5.2DEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSDEFININGAMAPPEDDIELECTRICDISTRIBUTIONOFAMETAMATERIALLENSIntheFrequenciestextfield,typef0.LocatediePhysicsandVariablesSelectionsectionInthetable,enterdi

15、efallowingsettings:PhysicsinterfaceSolveforDiscretizationDeformedGeometryphysics4OntheStudytoolbar,clickComputeRESULTSElectricField(ewfd)Thedefaultplotshowsthemagnitudeofelectricfields.ChangediedefaviltcolorpatternandaddacontourplotfordiemagnitudeIndieModelBuilderwindow,expandtheElectricField(ewfd)n

16、ode,thenclickSurfacelIntheSettingswindowforSurface,locatetheColoringandStylesectionFromtheColortablelist,chooseRainbowLightIntheModelBuilderwindow,riglit-clickElectricField(ewfd)andchooseContour.IntheSettingswindowforContourlocatedieLevelssectionIntheTotallevelstextfield,type14.LocatedieColoringandS

17、tylesectionFromtheColoringlist,chooseUniform.FromtheColorlist,chooseBlack.CleardieColorlegendcheckbox.OntheElectricField(ewfd)toolbar,clickPlot.SeeFigure3tocomparethereproducedplot.Addafilledcontourplotdescribingdiedielectricdistributionoverthelens.2DPlotGroup2OntheHometoolbar,clickAddPlotGroupandch

18、oose2DPlotGroup.IntheModelBuilderwindow,riglit-click2DPlotGroup2andchooseContour.IntheSettingswindowforContour,clickReplaceExpressionintheupper-riglitcornerofdieExpressionsectionFromthemenu,chooseComponentlElectromagneticWaves,FrequencyDomainMaterialpropertiesewfd.epsrAvRelativepermittivity,averageLocatedieLevelssectionIndieTotallevelstex