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

Yaroshenko, Andre ; Bech, Martin LU ; Potdevin, Guillaume ; Malecki, Andreas ; Biernath, Thomas ; Wolf, Johannes ; Tapfer, Arne ; Schüttler, Markus ; Meiser, Jan and Kunka, Danays , et al. (2014) In Optics Express 22(1). p.56-547
Abstract

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.

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Contribution to journal
publication status
published
subject
keywords
Computer Simulation, Computer-Aided Design, Equipment Design, Equipment Failure Analysis, Interferometry/instrumentation, Lighting/instrumentation, Models, Theoretical, Refractometry/instrumentation, X-Ray Diffraction/instrumentation
in
Optics Express
volume
22
issue
1
pages
10 pages
publisher
Optical Society of America
external identifiers
  • scopus:84892643378
  • pmid:24515015
ISSN
1094-4087
DOI
10.1364/OE.22.000547
language
English
LU publication?
yes
id
6a833b13-7b95-4a9d-ae83-f67d48033241
date added to LUP
2019-04-26 13:54:19
date last changed
2020-01-30 03:40:30
@article{6a833b13-7b95-4a9d-ae83-f67d48033241,
  abstract     = {<p>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. </p>},
  author       = {Yaroshenko, Andre and Bech, Martin and Potdevin, Guillaume and Malecki, Andreas and Biernath, Thomas and Wolf, Johannes and Tapfer, Arne and Schüttler, Markus and Meiser, Jan and Kunka, Danays and Amberger, Maximilian and Mohr, Juergen and Pfeiffer, Franz},
  issn         = {1094-4087},
  language     = {eng},
  month        = {01},
  number       = {1},
  pages        = {56--547},
  publisher    = {Optical Society of America},
  series       = {Optics Express},
  title        = {Non-binary phase gratings for x-ray imaging with a compact Talbot interferometer},
  url          = {http://dx.doi.org/10.1364/OE.22.000547},
  doi          = {10.1364/OE.22.000547},
  volume       = {22},
  year         = {2014},
}