Open AccessNon-locally coded Fourier-transform ghost imaging
Author(s) -
Zhijie Tan,
Hong Ye,
Rengui Lu,
Rihong Zhu,
Shanchu Yang,
Shensheng Han
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.002937
Subject(s) - optics , fourier transform , phase retrieval , sample (material) , diffraction , encoding (memory) , image quality , ghost imaging , decoding methods , spatial frequency , computer science , phase (matter) , phase correlation , image resolution , coherent diffraction imaging , physics , artificial intelligence , fourier analysis , short time fourier transform , image (mathematics) , algorithm , quantum mechanics , thermodynamics
A non-locally coded Fourier-transform ghost imaging (FGI) scheme and relevant coded phase retrieval method have been proposed to improve the image quality in ghost imaging. By inserting masks in the reference beam, the sample in the test beam is non-locally modulated, and coded Fourier-transform diffraction patterns of the sample are obtained via intensity correlation calculations between the two beams. Encoding and decoding procedures are incorporated in the phase retrieval process based on traditional hybrid input-output algorithm. Simulation and experiment results show that the spatial information of samples is successfully recovered from the coded diffraction patterns obtained using three masks, and the image quality is improved remarkably. If promoting this approach to x-ray FGI systems, it may realize high-resolution x-ray microscopy without increasing the sample's radiation damage.