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首页> 外文期刊>Optics Letters >Zernike apodized photon sieves for high-resolution phase-contrast x-ray microscopy
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Zernike apodized photon sieves for high-resolution phase-contrast x-ray microscopy

机译:Zernike变迹光子筛用于高分辨率相差X射线显微镜

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摘要

We present a type of diffractive lens, Zernike apodized photon sieves (ZAPS), used as the objective for high spatial resolution and high phase-contrast imaging of weakly absorbing materials in x rays. The structure of ZAPS is based on the combination of two concepts: apodized photon sieves and Zernike phase contrast. The ZAPS is a single optic that integrates the appropriate +-pi/2 rad phase shift through selective zone placement shifts in an apodized photon sieve. Analysis of the focusing properties of the apodized photon sieve in terms of point-spread function show that the sidelobes have been significantly suppressed at the expense of slightly widening the width of the main lobe. In combination with synchrotron light sources, ZAPS offers new opportunities for high-resolution phase-contrast x-ray microscopy in the physical and life sciences.
机译:我们提出了一种衍射透镜,Zernike变迹光子筛(ZAPS),用作x射线中弱吸收材料的高空间分辨率和高相差成像的目标。 ZAPS的结构基于两个概念的组合:变迹的光子筛和Zernike相衬。 ZAPS是一种单光学器件,通过切趾光子筛中的选择性区域放置位移,将适当的+ -pi / 2 rad相移集成在一起。对切​​趾光子筛的聚焦特性的点扩散函数分析表明,旁瓣已被显着抑制,其代价是稍微扩大了主瓣的宽度。结合同步加速器光源,ZAPS为物理和生命科学领域的高分辨率相衬x射线显微术提供了新的机会。

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