Effect of insufficient temporal coherence on visibility contrast in X-ray grating interferometry

Wataru Yashiro, Daiji Noda, Kentaro Kajiwara

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

X-ray grating interferometry, which has been spotlighted in the last decade as a multi-modal X-ray imaging technique, can provide three independent images, i.e., absorption, di erential-phase, and visibility-contrast images. We report on a cause of the visibility contrast, an e ect of insu cient temporal coherence, that can be observed when continuous-spectrum X-rays are used. This e ect occurs even for a sample without unresolvable random structures, which are known as the main causes of visibility contrast. We performed an experiment using an acrylic cylinder and quantitatively explained the visibility contrast due to this e ect.

Original languageEnglish
Pages (from-to)1012-1027
Number of pages16
JournalOptics Express
Volume26
Issue number2
DOIs
Publication statusPublished - 2018 Jan 22

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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