Open AccessSingle-shot ptychography with highly tilted illuminations
Author(s) -
Chengcheng Chang,
Xingchen Pan,
Hua Tao,
Cheng Liu,
Suhas P. Veetil,
Jianqiang Zhu
Publication year - 2020
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.402374
Subject(s) - paraxial approximation , optics , phase retrieval , ptychography , diffraction , physics , computation , frame (networking) , laser , iterative reconstruction , fresnel diffraction , computer science , algorithm , fourier transform , computer vision , beam (structure) , telecommunications , quantum mechanics
A single-shot ptychographic iterative engine (PIE) using highly tilted illumination is proposed to realize accurate phase retrieval from a single frame of multiple and non-overlapping sub-diffraction patterns generated by a bunch of laser beams propagating at greater angles with respect to the optical axis. A non-paraxial reconstruction algorithm is developed to numerically propagate these highly tilted laser beams in back and forth iterative computations. Faster data acquisition and higher reconstruction quality are achieved in the proposed method by recording non-overlapping sub-diffraction patterns in a single frame and eliminating usual reconstruction errors arising from paraxial approximations.