Phase-shifts nπ/2 calibration method for phase-stepping interferometry

Fuzhong Bai

doi:10.1364/OE.17.016861

2009-09-08

Fuzhong Bai *

Changhui Rao

DOI：10.1364/OE.17.016861

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摘要

En 中文

A novel phase-shifts n pi/2 calibration method for phase-stepping interferometry, in which the sum intensities and the squared sum of a series of phase-shifted interferograms are firstly calculated, and then by the minimization of the variances of these sums perform the n pi/2 phase-shifts calibration, is proposed in this paper. The proposed method can overcome effectively the effect of the variations of background and modulation intensities in interferograms with any phase structure, and it is also insensitive to the nonlinearity of phase shifter. Numerical simulation and experiments are implemented to verify the effectiveness of this method. (C) 2009 Optical Society of America

Keyword:

FOURIER-TRANSFORM METHOD

期刊

Optics Express

IF:

3.3

论文数:

6.1W

被引数:

14.3W

机构

chinese academy of sciences

学者数:

56.7W

论文数: 45.0W

被引数: 704

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