近場(chǎng)光學(xué)不同成像方式的數(shù)值模擬.pdf

1、大連理工大學(xué)碩士學(xué)位論文近場(chǎng)光學(xué)不同成像方式的數(shù)值模擬姓名：林琳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：光學(xué)指導(dǎo)教師：簡(jiǎn)國(guó)樹20070610近場(chǎng)光學(xué)不同成像方式的數(shù)值模擬TheSimulationofDifferentKindsImagingintheNear—fieldOpticsAbstractTheconceptofnearfieldmicroscopywasproposedin1928byEHSyngeandhasgreatlydevelope

2、dManykindsofnearfieldmicroscopeshavebeeninventedNearfieldScanningOpticalMicroscopy(sNOM)andPhotonScanningTunnelingMicroscopeOsa[M)havebecomeincreasin舀ypopularasatooltostudythelocalopticalelectromagneticfieldclosetothesur

3、faceofdevicesfromintegratedoptics／photonicsTheyhavebeendemonstratedtobreakthediffractionlimitofresolutionandcollecttheopticalresponseofthesamplepointbypointBecausetheyhaveanopticalfiberastheprobeinordertodetectthesurface

4、evanescentWaVeandtransformittopropagatingwave，buthavethedifferentincidentwavesothedifferentimagingsystemsTheybothcandetectthesamplewithoutdamagingitstudylivebiologicalspectrum，andhavefoundwidespreadapplicationThedirectnu

5、mericalintegrationoffullvedorMaxwellequationsinthreedimensionsfinitedifferencetimedomain四奶D)methodwassuggested笛a(bǔ)numericalsolutionofelcctrodynamicproblemsThisthesisisbasedupontherationaleofnearfieldmicroscopyapplyingthenu

6、mericalsimulationoftheFDTDmethodOnthetwokindsofimagingsystemsanddiscussingthejrcharacteristicsFirstly，inthesituationwithnotipinthesystem，thedearima學(xué)路canbeshowneasily，andtherearethesamples’interferencesonlyThengettingthed

7、ifferentkindsoftipsinthesystems，theimagingbecomecomplex，andhardtoexplainFurthermore，theinnuenccsoftheimaginginbothsystemsaleinvestigatedandcomparedTheseresultswegotarevaluablefortheselectionoftheimagingsystemofthemicrosc