Phase retrieval based on cosine grating modulation and transport of intensity equation

Ya-ping Chen; Quan-bing Zhang; Hong Cheng; Yi Qian; Qian-qian Lv

doi:10.1117/12.2245694

19 October 2016 Phase retrieval based on cosine grating modulation and transport of intensity equation

Ya-ping Chen, Quan-bing Zhang, Hong Cheng, Yi Qian, Qian-qian Lv

Proceedings Volume 10155, Optical Measurement Technology and Instrumentation; 1015514 (2016) https://doi.org/10.1117/12.2245694
Event: International Symposium on Optoelectronic Technology and Application 2016, 2016, Beijing, China

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.

Citation Download Citation

Ya-ping Chen, Quan-bing Zhang, Hong Cheng, Yi Qian, and Qian-qian Lv "Phase retrieval based on cosine grating modulation and transport of intensity equation", Proc. SPIE 10155, Optical Measurement Technology and Instrumentation, 1015514 (19 October 2016); https://doi.org/10.1117/12.2245694

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