A simple zonal approach is proposed for estimating phase distribution on large grids. The estimation is based on phase differences that are precisely measured in two orthogonal directions by a lateral-shearing interferometer. It requires only O(N2) operations for reconstructing a phase distribution on an N × N grid. Computer simulation and experimental results are demonstrated to show the effectiveness of the new algorithm.
© 1995 Optical Society of America
Original Manuscript: February 14, 1995
Published: November 1, 1995
Xinkang Tian, Masahide Itoh, and Toyohiko Yatagai, "Simple algorithm for large-grid phase reconstruction of lateral-shearing interferometry," Appl. Opt. 34, 7213-7220 (1995)