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

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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.


  • Andre Yaroshenko
  • Martin Bech
  • Guillaume Potdevin
  • Andreas Malecki
  • Thomas Biernath
  • Johannes Wolf
  • Arne Tapfer
  • Markus Schüttler
  • Jan Meiser
  • Danays Kunka
  • Maximilian Amberger
  • Juergen Mohr
  • Franz Pfeiffer
Enheter & grupper
Externa organisationer
  • Technical University of Munich
  • Karlsruhe Institute of Technology

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Annan fysik
  • Radiologi och bildbehandling


Sidor (från-till)547-56
Antal sidor10
TidskriftOptics Express
StatusPublished - 2014 jan 13
Peer review utfördJa