Open AccessSingle-frame coherent diffraction imaging of extended objects using triangular aperture
Author(s) -
Jungmin Kang,
Shuntaro Takazawa,
Nozomu Ishiguro,
Yukio Takahashi
Publication year - 2021
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.414341
Subject(s) - optics , diffraction , coherent diffraction imaging , aperture (computer memory) , coded aperture , physics , phase retrieval , fresnel diffraction , plane wave , detector , computer science , quantum mechanics , fourier transform , acoustics
We propose a method of single-frame coherent diffraction imaging using a triangular aperture, which can not only reconstruct the projection image of extended objects from a single-frame coherent diffraction pattern, but also improve the image of the wavefield of the probe. In this method, a plane-wave illuminates a triangular aperture. An object is placed immediately after the aperture or in the image plane of the aperture through a lens. A far-field coherent diffraction pattern is collected by a two-dimensional detector. The object image is reconstructed from the single-frame diffraction pattern using a phase retrieval algorithm without support constraints. We simulate feasible experimental setups in the hard X-ray regime and show that this method can be practical use for single-frame coherent diffraction imaging. The present method has the potential exploring dynamic phenomena in materials science and biology with high spatiotemporal resolution using synchrotron radiation/free-electron lasers.