Signal enhancement in X-ray Talbot interferometry with a pair of concave and convex parabolic phase gratings
Abstract X-ray Talbot and Talbot–Lau interferometers consisting of transmission gratings are widely used for X-ray phase imaging, which depicts soft materials. This study exploits the use of a pair of concave and convex parabolic gratings instead of a conventional rectangular phase grating to enhance the phase signal optically. To gain insight into the optimal design, signal enhancement is evaluated by directly measuring the self-image formed downstream of the pair. An increase in the differential phase signals is demonstrated as a function of the distance between the pair, and prospects for deploying this concept into a practical phase imaging technique are discussed.
Authors
- Pouria Zangi (ORCID: https://orcid.org/0000-0001-5922-1498)
- Pascal Meyer (ORCID: https://orcid.org/0000-0001-5454-7739)
- Ryosuke Ueda (ORCID: https://orcid.org/0000-0001-5227-7624)
- Atsushi Momose (ORCID: https://orcid.org/0000-0002-6613-3266)
- Shinji KOBAYASHI (ORCID: https://orcid.org/0000-0003-1075-2401)
- Yichen Fang (ORCID: https://orcid.org/0000-0001-7364-9802)
- Martin Börner (ORCID: https://orcid.org/0000-0003-3552-8377)
- Yoshichika Seki (ORCID: https://orcid.org/0000-0003-0213-4486)
Institutions
- Karlsruhe Institute of Technology (DE)
- Tohoku University (JP)
Publication Details
- Journal
- Applied Physics Express
- Published
- 2024-11-22
- DOI
- https://doi.org/10.35848/1882-0786/ad9665
- Primary Topic
- Advanced X-ray Imaging Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Japan Science and Technology Corporation
- Deutsches Zentrum für Luft- und Raumfahrt
- Japan Society for the Promotion of Science