Dynamic Mach-Zehnder interferometer based on the lateral displacement of a point source array

Published on 2018-07-10T14:24:16Z (GMT) by
A dynamic Mach-Zehnder interferometer based on lateral displacement of a point source array is proposed. The point source array is generated by a point source and a phase grating, where four point sources are of identical intensity. The lateral displacement of each point source can be adjusted to introduce π/2 phase step in the interferograms. With a specially designed lens array in the spatial split imaging system, four separated and clear imaging interferograms can be captured in a single shot. Using four-bucket algorithm, the phase distribution can be retrieved exactly, thereby realizing dynamic measurement. The experimental results show the feasibility and high precision of the dynamic Mach-Zehnder interferometer.

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Ding, Yu; Chen, Lei; Kong, Lu; Yang, Ying; Liu, Zhiyuan; Sun, Qinyuan; Zheng, Donghui (2018): Dynamic Mach-Zehnder interferometer based on the lateral displacement of a point source array. The Optical Society. Collection.