Four-dimensional pink-beam x-ray phase tomography for studying laser processing

Atsushi Momose, Karol Vegso, Hidekazu Takano, Yanlin Wu, Koh Hashimoto, Masato Hoshino

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)


X-ray phase tomography by Talbot interferometry functions with X-rays of a broad energy band, and a pink- beam extracted by a multilayer mirror from white synchrotron radiation is used for four-dimensional X-ray phase tomography, which was developed at BL28B2, SPring-8, Japan. Polymer samples under infrared laser irradiation were observed as model experiments of laser processing. In this paper, laser ablation for a carbon-fiber reinforced polymer (CFRP) sample is reported. Thanks to the fact that the fibrous structure generates visibility (or dark-field) contrast, four-dimensional tomogram from the visibility reduction is presented. A technical effort to improve the temporal resolution from 1 s to 160 ms is also described.

Original languageEnglish
Title of host publicationDevelopments in X-Ray Tomography XII
EditorsBert Muller, Ge Wang
ISBN (Electronic)9781510629196
Publication statusPublished - 2019
Event12th SPIE Conference on Developments in X-Ray Tomography 2019 - San Diego, United States
Duration: 2019 Aug 132019 Aug 15

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


Conference12th SPIE Conference on Developments in X-Ray Tomography 2019
Country/TerritoryUnited States
CitySan Diego


  • CFRP
  • Dynamics
  • Grating
  • Interferometry
  • Laser processing
  • Phase tomography
  • Pink Beam
  • Synchrotron radiation
  • Visibility contrast


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