Optimized short kinoform lenses for hard X-ray nano-focusing
Liao KL(廖可梁); Hong YL(洪友丽); Sheng WF(盛伟繁); Liao, KL; Hong, YL; Sheng, WF
刊名OPTICS COMMUNICATIONS
2015
卷号339页码:53-60
关键词Nano-focusing Dynamical diffraction theory X-ray optics
学科分类Optics
DOI10.1016/j.optcom.2014.11.062
通讯作者盛伟繁
文章类型Article
英文摘要An optimized structure of the short kinoform lens (KL) for hard X-ray nano-focusing is presented. By modifying the lower and upper surfaces of the conventional short KL, the focusing performance is improved largely. Unlike the conventional short KLs, whose effective numerical aperture (NA) is limited by the edge diffraction effects and multi-wave scattering, the optimized short KL, is capable of achieving diffraction-limited focusing. The Takagi-Taupin description (TTD) of X-ray dynamical diffraction theory is employed to investigate the diffractive properties of the optimized short KL When the harmonic number equals 1, the optimized short KL could be treated as a diffractive lens, whose effective NA could exceed the critical angle limit. According to their different focusing properties, the lens aperture could be divided into three regions, namely the refraction region, the transition region and the resonance region. As a comparison, with a large harmonic number, the optimized short KL behaves more like a refractive lens and its effective NA is restricted by the critical angle limit. By choosing appropriate harmonic number, maximum duty cycle and maximum propagation ratio, the difficulty in fabricating the proposed lens structure could be alleviated greatly without degrading the focusing performance obviously. This study indicates that, besides the arrangement of lens segments, their shapes are also important. The simulation results demonstrate that a short KL is also a potential candidate for hard X-ray nano-focusing. (C) 2014 Elsevier B.V. All rights reserved.
类目[WOS]Optics
收录类别SCI ; EI ; CA
WOS记录号WOS:000348084500008
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228077
专题中国科学院高能物理研究所_多学科研究中心_期刊论文
中国科学院高能物理研究所_多学科研究中心
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Liao KL,Hong YL,Sheng WF,et al. Optimized short kinoform lenses for hard X-ray nano-focusing[J]. OPTICS COMMUNICATIONS,2015,339:53-60.
APA 廖可梁,洪友丽,盛伟繁,Liao, KL,Hong, YL,&Sheng, WF.(2015).Optimized short kinoform lenses for hard X-ray nano-focusing.OPTICS COMMUNICATIONS,339,53-60.
MLA 廖可梁,et al."Optimized short kinoform lenses for hard X-ray nano-focusing".OPTICS COMMUNICATIONS 339(2015):53-60.
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