液晶光閥的相位調(diào)制特性的研究及其在波面實(shí)時(shí)轉(zhuǎn)換系統(tǒng)中的應(yīng)用.pdf

1、蘇州大學(xué)碩士學(xué)位論文液晶光閥的相位調(diào)制特性的研究及其在波面實(shí)時(shí)轉(zhuǎn)換系統(tǒng)中的應(yīng)用姓名：范君柳申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：光學(xué)指導(dǎo)教師：方建興馮秀舟20080501液晶光閥的相位調(diào)制特性的研究及其在波面實(shí)時(shí)轉(zhuǎn)換系統(tǒng)中的應(yīng)用AbstractABSTRACTInlaser’Spracticalapplicationpeopleusuallyneedtoconvertthewavefrontofthelasertochangetheintensity

2、distributionaccordingtodifferentrequirements。Forexample，inlaserprocessing，heattreatmentandinertialconfinementfusion(ICF)，laserspotwithvariousshapeandvariablesizeisoftenneededSo，thelaserconversiontechnologyhasbroadapplica

3、tionprospects，wecanalsoconvertthelaser’Swavefrontbyusingthebinaryopticalpure—phaseelement、)l，ithreliefstructurehowever，theprocessiscomplexandquiteexpensiveThispapermainlyinvolvestheresearchofawavefrontconversionsystembas

4、edonthephasemodulmionofTFTLCDwhichisrelativelysimpleandcheapThispaperintroducesthecreation，developmentandprogressofthewavefrontconversiontechnology，andanalysestheopticalandelectro—opticalpropertiesoftheliquidcrystal，andc

5、arriesonaresearchonthestructureandworkingprincipleofTFTLCD，moreover，itofferstwopopularalgorithmsusedtoconvertwavefrontinadetailedwayalsogivesantheoreticalderivationoftheTFT—LCD’Sphaseandamplitudemodulationcharacteristics

6、，thenmeasurestheparametersandphasemodulationcharacteristicsoftheTFT—LCDbyusingdoubleslitinterferencemethodWeobtaintherelationbetweenrelativephaseandgrayscalethroughcurvefittingWealsodiscussthefeasibilityof程T—LCDasaphasem

7、odulationelementthroughthehollowbeamexperimentThefourthchapterofthepaperputforwardsareal—timewaveconversionsystembasedonthephasemodulationcharacteristicsoftheTFT—LCD，andalsodoessomecorrespondingexperiments：toconverttheGa

8、ussianbeamtothebox—shapedbeam，wegetthephasedistribution州tllthegeometrictheory，whichweturnintograylevelimagedisplayedontheTFTLCD’SscreenTheexperimentalresultsprovideexpecteddiffractionpattem；thepaperalsogivesthesimulation

9、resultsWithcombinationofscalartheorythesystemconveatheGaussianbeamintothetriangle—shapedandelliptic—shapedbeams，likethegeometrictheory，weobtainthephasedistributionofthecorrespondingbinaryopticalelement(BOE)whichwechangei