Open AccessGeneral spatial phase-shifting interferometry by optimizing the signal retrieving function
Author(s) -
Yi Wang,
Xiang Qiu,
Jiaxiang Xiong,
Bingbo Li,
Liu Zhong,
Shengde Liu,
Yunfei Zhou,
Jing Tian,
Xiaoxu Liu
Publication year - 2017
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.25.007170
Subject(s) - interferometry , interference (communication) , spatial frequency , phase (matter) , computer science , phase retrieval , optics , signal (programming language) , physics , telecommunications , fourier transform , channel (broadcasting) , quantum mechanics , programming language
A general spatial phase-shifting (GSPS) interferometry method is proposed to achieve phase retrieval from one-frame spatial carrier frequency interferogram. By optimizing the internal signal retrieving function of the spatial phase-shifting (SPS) method, the accuracy, anti-noise ability and speed of phase retrieval can be significantly improved, meanwhile the corresponding local calculation property is reserved. Especially, in the case that the ratio of the spatial carrier to the phase variation rate are small, the proposed method reveals obvious advantage in the accuracy improvement relative to the conventional SPS methods, so the more details of measured sample can be effectively reserved through introducing smaller spatial carrier frequency, and this will facilitate its application in interference microscopy. The principle analysis, numerical simulation and experimental result are employed to verify the performance of the proposed GSPS method.