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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 3 — Mar. 6, 2014

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

Andre Yaroshenko, Martin Bech, Guillaume Potdevin, Andreas Malecki, Thomas Biernath, Johannes Wolf, Arne Tapfer, Markus Schüttler, Jan Meiser, Danays Kunka, Maximilian Amberger, Juergen Mohr, and Franz Pfeiffer  »View Author Affiliations


Optics Express, Vol. 22, Issue 1, pp. 547-556 (2014)
http://dx.doi.org/10.1364/OE.22.000547


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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.

© 2014 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.7440) Medical optics and biotechnology : X-ray imaging
(260.0260) Physical optics : Physical optics
(340.0340) X-ray optics : X-ray optics
(340.7440) X-ray optics : X-ray imaging
(340.7450) X-ray optics : X-ray interferometry

ToC Category:
X-ray Optics

History
Original Manuscript: October 28, 2013
Revised Manuscript: November 28, 2013
Manuscript Accepted: November 28, 2013
Published: January 3, 2014

Virtual Issues
Vol. 9, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Andre Yaroshenko, Martin Bech, Guillaume Potdevin, Andreas Malecki, Thomas Biernath, Johannes Wolf, Arne Tapfer, Markus Schüttler, Jan Meiser, Danays Kunka, Maximilian Amberger, Juergen Mohr, and Franz Pfeiffer, "Non-binary phase gratings for x-ray imaging with a compact Talbot interferometer," Opt. Express 22, 547-556 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-22-1-547


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