環(huán)路徑向剪切干涉用于波前畸變檢測的研究.pdf

1、哈爾濱工業(yè)大學(xué)碩士學(xué)位論文環(huán)路徑向剪切干涉用于波前畸變檢測的研究姓名：王巖申請學(xué)位級別：碩士專業(yè)：物理電子學(xué)指導(dǎo)教師：呂志偉20050601哈爾濱T業(yè)大學(xué)T學(xué)碩士學(xué)位論文AbstractTheresearchofInertialConfinementFusion(ICF)techniqueisimportanttoexploitthenewenergysourceTomakethelaserbeamhaveagoodspatialdis

2、tribution，itinvolvestechniquesinmanyfields，suchasoptics，mechanicsandelectronicsetcThediagnosisandcontrolofdistortedwavefrontisakeyissueinthefieldofhighpowerlasersystemincludingICFlaserTherearemanywaystomeasurewave—frontd

3、istortionAllkindsofdistortedwavefrontsensorhavebeenusedinwavefrontdiagnosisoflasersystemComparedwithotherways，themeasuringwaybasedonradialshearinginterferometer(RSI)hasmanymeritsFirstlyspecializedreferencelightisnotneces

4、saryinthisRSI’SlightpathSodistortedwavefrontoflargecaliaberlaserscanbemeasuredSecondlyRSIissuitabletobeusedonthebothstaticanddynamicspotforitshighprecisionanddullnesstOvibrationMaincontentsandresultsinthisdissertationhav

5、ebeensummarizedasfellows：1TheimportanceofqualilyingthewavefrontdistortioninICFsystemisrecountedTheprincipleandtypicalstructureoftheradialshearinginterferometerisdescribed2AcomprehensivecomparisonismadebetweenFouriertrans

6、formmethodandseveralothermethodsforextractingphaseinformationbasedonspatialcarrierfringepatternSomeimportantissuesuchasbordereffect，frequencyleakeffect，phaseunwrapping，selectionofcarrierfrequencyandSOon，isanalyzedforFour

7、iertransformmethod3TherearenoticeableinaccuracieswhenthetraditionalFouriertransformmethodisusedtoanalysethecarrierfringepatternAextrapolationoffringeprolongationisproposedtoeliminateendeffects4NumericalsimulationiSperfor

8、medtoevaluatetheperformanceofthemethodfor1Ddigitalsignaland2DspatialcarrierfringepatternThecarrierisremovedbysubtractingthephaseofthepurecarrierfringes，whichcanalseducethesystemerrorsTheresultshowsthaterrorsarereducedatt