Non-binary phase gratings for x-ray imaging with a compact Talbot interferometer

被引：24

作者：

Yaroshenko, Andre ^{[1
,2
]}

Bech, Martin ^{[1
,2
,3
]}

Potdevin, Guillaume ^{[1
,2
]}

Malecki, Andreas ^{[1
,2
]}

Biernath, Thomas ^{[1
,2
]}

Wolf, Johannes ^{[1
,2
]}

Tapfer, Arne ^{[1
,2
]}

Schuettler, Markus ^{[1
,2
,4
]}

Meiser, Jan ^{[4
]}

Kunka, Danays ^{[4
]}

Amberger, Maximilian ^{[4
]}

Mohr, Juergen ^{[4
]}

Pfeiffer, Franz ^{[1
,2
]}

机构：

[1] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[2] Tech Univ Munich, Inst Med Engn, D-85748 Garching, Germany

[3] Lund Univ, S-22185 Lund, Sweden

[4] Karlsruhe Inst Technol, Inst Microstruct Technol, D-76344 Eggenstein Leopoldshafen, Germany

来源：

OPTICS EXPRESS | 2014年 / 22卷 / 01期

基金：

欧洲研究理事会;

关键词：

COMPUTED-TOMOGRAPHY; VISUALIZATION; GENERATION; SYSTEM;

D O I：

10.1364/OE.22.000547

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

X-ray imaging using a Talbot-Lau interferometer, consisting of three binary gratings, is a well-established approach to acquire x-ray phase-contrast and dark-field images with a polychromatic source. However, challenges in the production of high aspect ratio gratings limit the construction of a compact setup for high x-ray energies. In this study we consider the use of phase gratings with triangular-shaped structures in an x-ray interferometer and show that such gratings can yield high visibilities for significantly shorter propagation distances than conventional gratings with binary structures. The findings are supported by simulation and experimental results for both cases of a monochromatic and a polychromatic source. (C)2013 Optical Society of America

引用

页码：547 / 556

页数：10

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