The method of phase retrieval of complex wavefield from two intensity measurements applicable to hard X-rays

被引:22
作者
Kohn, VG
机构
[1] Russ. Res. Ctr. Kurchatov Institute, 123182, Moscow
关键词
D O I
10.1088/0031-8949/56/1/002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A novel algorithm for a reconstruction of the phase shift profile produced by a transparent object in a coherent wave, from a set of two recorded intensity distributions is presented. Contrary to well known algorithms of in-line holography, the method works under the near-held condition where the size of the first Fresnel zone is much less than the characteristic size of the object's details. Such a condition is typical for an in-line holography experimental setup with the use of coherent high energy X-rays (E > 20 keV) produced by synchrotron radiation sources of the third generation like ESRF. The novel algorithm is fast and insensitive to a partial loss of coherence or weak detector resolution. The method can be applied to X-ray refraction tomography.
引用
收藏
页码:14 / 19
页数:6
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