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Proceedings Paper

Phase retrieval based on cosine grating modulation and transport of intensity equation
Author(s): Ya-ping Chen; Quan-bing Zhang; Hong Cheng; Yi Qian; Qian-qian Lv
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Paper Abstract

In order to calculate the lost phase from the intensity information effectively, a new method of phase retrieval which based on cosine grating modulation and transport of intensity equation is proposed. Firstly, the cosine grating is loaded on the spatial light modulator in the horizontal and vertical direction respectively, and the corresponding amplitude of the light field is modulated. Then the phase is calculated by its gradient which is extracted from different direction modulation light illumination. The capability of phase recovery of the proposed method in the presence of noise is tested by simulation experiments. And the results show that the proposed algorithm has a better resilience than the traditional Fourier transform algorithm at low frequency noise. Furthermore, the phase object of different scales can be retrieved using the proposed algorithm effectively by changing the frequency of cosine grating, which can control the imaging motion expediently.

Paper Details

Date Published: 19 October 2016
PDF: 6 pages
Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 1015514 (19 October 2016); doi: 10.1117/12.2245694
Show Author Affiliations
Ya-ping Chen, Anhui Univ. (China)
Quan-bing Zhang, Anhui Univ. (China)
Hong Cheng, Anhui Univ. (China)
Yi Qian, Anhui Univ. (China)
Qian-qian Lv, Anhui Univ. (China)

Published in SPIE Proceedings Vol. 10155:
Optical Measurement Technology and Instrumentation
Sen Han; JiuBin Tan, Editor(s)

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