Quantitative theory of X-ray interferometers based on dual phase grating: Fringe period and visibility

Academic Article


  • In most of grating x-ray interferometry one needs an absorbing grating as the analyzer to measure high-resolution interference fringes. Dual phase grating interferometry is a technique to get rid of the absorbing grating for radiation dose reduction. The authors present a quantitative theory of dual grating x-ray interferometry. The theory elucidates the fringe formation mechanism. The derived formulas of fringe period and fringe visibility provide useful tools for design optimization of dual phase grating interferometers.
  • Authors

    Published In

  • Optics Express  Journal
  • Digital Object Identifier (doi)

    Author List

  • Yan A; Wu X; Liu H
  • Start Page

  • 23142
  • End Page

  • 23155
  • Volume

  • 26
  • Issue

  • 18