Open AccessPtycholographic iterative engine with self-positioned scanning illumination
Author(s) -
Xingchen Pan,
Cheng Liu,
Qiang Lin,
Jianqiang Zhu
Publication year - 2013
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.21.006162
Subject(s) - optics , translation (biology) , backlash , metre , scattering , iterative reconstruction , diffraction , computer science , image quality , iterative method , materials science , algorithm , physics , computer vision , artificial intelligence , image (mathematics) , biochemistry , chemistry , astronomy , messenger rna , gene
A special optical alignment is adopted and corresponding reconstruction algorithm is developed to reduce the reconstruction error induced by the hysteresis or backlash error of the translation stage in Ptychographical Iterative Engine (PIE) imaging with weak scattering specimen. In this suggested method, the positions of the scanning probe are determined directly from the recorded diffraction patterns rather than from the readout of the stage meter. This method not only remarkably improves the reconstruction quality, but also completely lowers the dependency of PIE on the device accuracy and accordingly enhances its feasibility for many applications with weak scattering specimen.