Simple direct extraction of unknown phase shift and wavefront reconstruction in generalized phase-shifting interferometry: algorithm and experiments.
An algorithm to extract the arbitrary unknown phase shift and then reconstruct the complex object wave in generalized phase-shifting interferometry (GPSI) without the iteration process and measurement of object wave intensity is proposed. This method can be used for GPSI of any frame number >or=2. Both computer simulations with smooth and diffusing object surfaces and optical experiments have verified the effectiveness of this method over a wide range of phase shifts with very satisfactory results.
Xu
X F
XF
Department of Optics, Shandong University, Jinan 250100, China.
Cai
L Z
LZ
Wang
Y R
YR
Meng
X F
XF
Sun
W J
WJ
Zhang
H
H
Cheng
X C
XC
Dong
G Y
GY
Shen
X X
XX