Modified Fourier-transform method for phase-shift calibration

doi:10.1016/j.optlaseng.2011.02.007

2011-07-01

PRE

DOI：10.1016/j.optlaseng.2011.02.007

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摘要

En 中文

A fast convergent algorithm to accurately measure phase-shift for phase shifter is proposed. In the presence of a spatial carrier frequency, an error function in the Fourier-domain is introduced and then the unknown phase-shift between two phase-shifted fringe patterns is determined by minimization of the error function with the help of a golden section search approach. Compared with the conventional Fourier-transform method, the modified method proposed in the paper is more immune to random noise and hence can give a more accurate result. The translation curve of a liquid-crystal spatial light modulator is also experimentally calibrated. (C) 2011 Elsevier Ltd. All rights reserved.

Keyword:

Phase-shift calibration

Fringe pattern

Modified Fourier-transform method

Golden section search approach

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期刊

Optics and Lasers in Engineering

IF:

3.7

论文数:

7.3K

被引数:

1.7W

机构

Inner Mongolia University of Technology

学者数:

4.5K

论文数: 2.6K

被引数: 2.3K

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