论文编号: 172511O120100126
第一作者所在部门: 三室一组
论文题目: Spiral photon sieves apodized by digita lprolate spheroidal window for the generation of hard-x-ray vortex
论文题目英文:
作者: 谢常青
论文出处: SCI收录
刊物名称: OPTICS LETTERS
: 2010
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影响因子: 3.059
摘要: Weextendtheworkofphotonsievestospiralphotonsieves(SPSs)forthegenerationofahard-x-rayvortex.Arobust
digitalprolatespheroidalwindow,whichhasanoptimalenergyconcentrationatlowfrequencies,wasusedtoad-
justthenumberofpinholesoneachringoftheSPS.ItwasdemonstratedthatanSPShasbetterspatialresolutionand
lowerbackgroundthanaspiralzoneplateusingthespecifiedsmalleststructurescondition.Theintensityatthe
centerofthedarkcoreisdifficulttodamptotruezero,primarilyowingtocurrentlimitationsofhigh-aspect-ratio
metalnanostructures.Thediameterofthedarkcoreincreasesasthechargevalueincreases.However,theFWHMof
thedoughnut-shapedringandbackgroundwillalsoincrease.Ourresultspavethewaytowardthedesignofhigh-
performanceSPSsforthegenerationofahard-x-rayvortex
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