Open AccessDesign and demonstration of phase gratings for 2D single grating interferometer
Author(s) -
Naoki Morimoto,
Sho Fujino,
Yasuhiro Ito,
Amane Yamazaki,
Issei Sano,
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.23.029399
Subject(s) - optics , grating , interferometry , phase (matter) , differential phase , diffraction grating , materials science , visibility , physics , quantum mechanics
In this study, we examined five types of phase gratings in a two-dimensional (2D) single grating interferometer with multidot metal targets embedded in a diamond substrate. For a phase grating consisting of two stacked 1D π/2-phase gratings and a checkerboard π-phase grating the multidot-pattern self-images with high visibility (40%) were obtained as expected from simulations. In addition to an absorption image, differential phase contrast and dark-field images in both x and y directions were derived from a single image. We also examined face-centered-square multidot metal targets, which doubled the x-ray intensity, and obtained differential phase contrast images in both x and y directions.