偏振旋光角度場(chǎng)測(cè)量方法及其在磁光成像中的應(yīng)用研究.pdf

1、南京航空航天大學(xué)碩士學(xué)位論文偏振旋光角度場(chǎng)測(cè)量方法及其在磁光成像中的應(yīng)用研究姓名：蔣琦申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：測(cè)試計(jì)量技術(shù)及儀器指導(dǎo)教師：徐貴力201103偏振旋光角度場(chǎng)測(cè)量方法及其在磁光成像中的應(yīng)用研究iiABSTRACTAnglemeasurementofpolarizedlightisofgreatsignificanceintheareaofnondestructivetestingbiologicalfoodengineeri

2、ngnavigationdetection.Currentlythemeasurementmethodsareconcentratedinthesinglepointmeasurementthesemethodsaresimplefastbuttheyignetheheterogeneityofthemeasuredobject.Mostofthedistributionmeasurementofpolarizationisameasu

3、reofthedegreeofpolarizationratherthanpolarizationangle.AmethodusedtomeasurethedistributionofpolarizationbeamsplitterimagingisproposeditsapplicationsinMOI(magoopticalimage)areexpledstudiedinthisarticle.Firstlythebasicprin

4、ciplesofmeasurementbasedonthepolarizationbeamsplitterareintroducedinJonesvectwiththemathematicaldeionofpolarizationpolarizationrotationmeasurementacteristics.AccdingtoanalyzetheJonesmatrixsofthetwopolarizedlightafterspli

5、tingthelawisfoundthatthesineoftheanglevalueisdirectlygotbysignalprocessingofthetwolightitisunaffectedbyfluctuationsoflightintensity.ThemethodbasedonpolarizationbeamsplitterisproposedwhichcombinesthefeaturesofCCD.Secondly

6、themeasurementsystemofpolarizationanglebasedontheopticalofpolarizationbeamsplitterimagingisdesignedconstructedfield.Accdingtoacteristicsofimagingnoisethepictureswhicharenotmatchingthemethodbasedonmedianfilteringthealgith

7、mofimagematchingbasedonnmalizedcrosscrelationarestudies.Thirdlyindertoverifythefeasibilityadvantagesofthismethodthecomparativeexperimentsofthepolarizationbeamsplitterimagingsystemwiththetraditionalpolarizationextinctions

8、ystemisdesignedtomeasurethedistributionofrotationanglesofthe12waveplate.Experimentalmeasurementsshowthattheerrofthepolarizationbeamsplittermeasurementissmallertheresultsaremeclosetothetheeticalvalue.Themeansquareerrofmul

9、tiplepolarizationbeamsplittermeasurementsis0.14lessthan0.4whichismultiplemearsuredbypolarizationextinctionmethod.Theresultsofpolarizationbeamsplittermeasurementareunaffectedbyfluctuationsoflightintensity.Themeasurementba

10、sedonpolarizationbeamsplitterimagingcaneffectivelymeasurethedistributionoftherotationanglestheresultismeintuitiveaccurate.Finallyindertosolvetheploblemsofmagoopticalimagingasthefluctuationsoflightintensityquantifyingofth