简介：Inopticalscanningholography,onepupilproducesasphericalwaveandanotherproducesaplanewave.Theyinterferewitheachotherandresultinafringepatternforscanningathree-dimensionalobject.Theresolutionofthehologramreconstructionisaffectedbythepointspreadfunction(PSF)oftheopticalsystem.Inthispaper,wemodulatethePSFbyaspiralphaseplate,whichsignificantlyenhancesthelateralanddepthresolution.Weexplainthetheoryforsuchresolutionenhancementandshowsimulationresultstoverifytheefficacyoftheapproach.
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