空心高斯光束的傳輸特性研究.pdf

1、湖南大學(xué)碩士學(xué)位論文空心高斯光束的傳輸特性研究姓名：唐明申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：傅喜泉20100315碩士學(xué)位論文AbstractHollowbeamasanewtypeofbeamisdiscoveredinrecentVearsItscenterintensityiszeroDuetothehollowbeamwithanoVelanduniquephysicalproperties：fbrexample，t

2、hebarrelintensitydistribution，thesmallerdarkspotsizeandpropagationofinVarianceandwithspinandorbitalangularmomentumandso0nTherefbre，thisuniquelightbeamhasawiderangeofapplicationprospectsinthelaserbeam0ptics，binaryoptics，c

3、omputcrgeneratedhologram，micr0particleopticalconfinement，biologicalmedicineThispapermainlystudiesthepropagationcharacteristicsofhollowGaussianbeamsThisworkhasimpoftantscientificsignificanceThismajorwofkandtheresultsachie

4、vedareasf0Uows：Firstlythepaperfirstintroducesthedefinition0fthehollowbeamandbackground，andgiVesthemethodfbrproducingthehollowbeamindetailSummaryandanalysisofaVafictyofeValuationcriteriaoflaserbeamquality，thecommonresearc

5、hmethodsinlaserpropagationandcompafclhcifadvanlagesanddisadVantagesSecondIy’basedonthetheoryof^，2factorofAESiegmanandthetheoryofgeneralM2factorofRMaftinezHerr0andothers，Wehavestudiedthegeneralizedpropagationfactorofthcno

6、ntruncatedandt11IncatedhollowGaussianbeamsintherectangularc00rdinatesystemandcylindricalcoordinatesThercsultsshowthatthegeneralizedbeampropagationfactorofthenontruncatedhoHowGaussianbeamsonlydependonthe0rder0fthenumber0f

7、nintherectanguIarcoOrdinatesystemcylindricalcoordinatesystem，andthe^，2factorincreasesalongwiththeorderofthehoUowbeamincreasesWhenn=0，^，2=1，herethehollowGaussiancorrespondst0idealGaussianbeamThebeampropagationfactofofthet

8、runcatedhollowbeamsintherectangularcoordinatesystemandcylindricalcoordinatesystemnotonlyrelatedtotheirorder0fn，butwiththehonowbeamtfuncationparameteLThercsuItsshowthattheM2factorofhollowGaussianbeamdecreasesalongwithtrun

9、cationparameterpincfeases，whentruncationparameter∥becomethelargerthe^，2factorfinaUyistobestabilizedThirdly，thepropagationpropertiesofhollowGaussianbeamsthroughaparaxialABCDop￡icalsystemarestudiedbyuse0fCollinsfbrmula，the