Open AccessTwo dimensional x-ray phase imaging using single grating interferometer with embedded x-ray targets
Author(s) -
Naoki Morimoto,
Sho Fujino,
Amane Yamazaki,
Yasuhiro Ito,
Takuji Hosoi,
Heiji Watanabe,
Takayoshi Shimura
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.016582
Subject(s) - optics , grating , physics , interferometry , phase contrast imaging , detector , phase (matter) , streak , diffraction grating , x ray optics , pixel , x ray , x ray detector , quantum mechanics , phase contrast microscopy
Using multidot metal targets embedded in a diamond substrate, we created a single-grating Talbot-Lau interferometer and used it to capture two dimensional (2D) x-ray phase images. The ensemble of these targets constitutes a tiny virtual array of x-ray source and enables x-ray phase-contrast imaging with no source or absorption grating within a 1 m source-detector distance for 8 keV x-rays. We directly resolved a dot-pattern self-image of the phase grating with 6 µm pitch by using an x-ray image detector with 24 µm pixels and obtained 2D differential-phase and dark-field images from a single-exposure. Using the 2D differential-phase images, we also obtained a phase image with no streak artifacts.