Open AccessThree-wave shearing interferometer based on spatial light modulator
Author(s) -
Si-Hong Zhai,
Jianping Ding,
Jing Chen,
Ya-Xian Fan,
HuiTian Wang
Publication year - 2009
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.17.000970
Subject(s) - optics , spatial light modulator , interferometry , shearing interferometer , shearing (physics) , phase modulation , interference (communication) , spatial frequency , physics , phase (matter) , materials science , astronomical interferometer , computer science , phase noise , telecommunications , channel (broadcasting) , quantum mechanics , thermodynamics
The use of a SLM for the three-wave lateral shearing interference is proposed, and an eight-step phase-shifting scheme is developed for extracting phase information from three-wave interferograms. The two-dimensional phase of object is reconstructed from two phase differences which are calculated from two orthogonal sheared interferograms. The flexibility of SLM can be fully utilized in the sense of dynamical controlling of the direction and amount of shear, as well as phase shift. The numerical simulation and optical experiment are carried out to demonstrate the feasibility and reliability of the proposed scheme.