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 |
年: | 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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