Open AccessBlind deconvolution for spatial distribution of Kα emission from ultraintense laser-plasma interaction
Author(s) -
Weiji He,
Ziqi Zhao,
Jian Wang,
Bo Zhang,
Feng Qian,
Zuhua Yang,
Miao Shui,
Feng Liu,
Teng Jiang,
Leifeng Cao,
Yuqiu Gu
Publication year - 2014
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.22.005875
Subject(s) - deconvolution , optics , physics , laser , noise (video) , computer science , image (mathematics) , artificial intelligence
The spatial distributions of the Kα emission from foil targets irradiated with ultra-intensity laser pulses have been studied using the x-ray coded imaging technique. Due to the effect of hard x-ray background contamination, noise as well as imperfection of imaging system, it is hard to determine the PSF analytically or measure it experimentally. Therefore, we propose a blind deconvolution method to restore both the spatial distributions of the Kα emission and the system's PSF from the coded images based on the maximum-likelihood scheme. Experimental restoration results from penumbral imaging and ring coded imaging demonstrated that both the structure integrity and the rich detail information can be well preserved.