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Journal of Biomedical Optics

Variable aperture-based ptychographical iterative engine method
Author(s): Aihui Sun; Yan Kong; Xin Meng; Xiaoliang He; Ruijun Du; Zhilong Jiang; Fei Liu; Liang Xue; Shouyu Wang; Cheng Liu
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Paper Abstract

A variable aperture-based ptychographical iterative engine (vaPIE) is demonstrated both numerically and experimentally to reconstruct the sample phase and amplitude rapidly. By adjusting the size of a tiny aperture under the illumination of a parallel light beam to change the illumination on the sample step by step and recording the corresponding diffraction patterns sequentially, both the sample phase and amplitude can be faithfully reconstructed with a modified ptychographical iterative engine (PIE) algorithm. Since many fewer diffraction patterns are required than in common PIE and the shape, the size, and the position of the aperture need not to be known exactly, this proposed vaPIE method remarkably reduces the data acquisition time and makes PIE less dependent on the mechanical accuracy of the translation stage; therefore, the proposed technique can be potentially applied for various scientific researches.

Paper Details

Date Published: 27 February 2018
PDF: 8 pages
J. Biomed. Opt. 23(2) 026007 doi: 10.1117/1.JBO.23.2.026007
Published in: Journal of Biomedical Optics Volume 23, Issue 2
Show Author Affiliations
Aihui Sun, Jiangnan Univ. (China)
Yan Kong, Jiangnan Univ. (China)
Xin Meng, Jiangnan Univ. (China)
Xiaoliang He, Shanghai Institute of Optics and Fine Mechanics (China)
Ruijun Du, Jiangnan Univ. (China)
Zhilong Jiang, Jiangnan Univ. (China)
Fei Liu, Nanjing Agricultural Univ. (China)
Liang Xue, Shanghai Univ. of Electric Power (China)
Shouyu Wang, Jiangnan Univ. (China)
Nanjing Agricultural Univ. (China)
Cheng Liu, Jiangnan Univ. (China)
Shanghai Institute of Optics and Fine Mechanics (China)

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