A single-shot phase-shifting radial-shearing interferometer

被引：19

作者：

Toto-Arellano, N. I. ^{[1
]}

Rodriguez-Zurita, G. ^{[1
]}

Meneses-Fabian, C. ^{[1
]}

Vazquez-Castillo, J. F. ^{[1
]}

机构：

[1] Benemerita Univ Autonoma Puebla, Fac Ciencias Fisicomatemat, Lab Interferometria & Holog, Puebla, Mexico

来源：

JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS | 2009年 / 11卷 / 04期

关键词：

image processing; interference; polarization; gratings; phase-shifting; interferometry; radial shearing; flow visualization and imaging; CORNEAL TOPOGRAPHY MEASUREMENT; POLARIZATION; LASER; INTERFERENCE;

D O I：

10.1088/1464-4258/11/4/045704

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A grating interferometer to simultaneously produce n radial-sheared phase-shifted interferograms is proposed. It consists basically of an adaptation of a well known radial-shear interferometer in conjunction with a grating interferometer. This combination enables the use of phase-shifting techniques for measuring phase distributions. Several interferograms can be achieved with a double phase grating of a given frequency, and the required phase shift can be performed with modulation of polarization. Experimental results are presented for cases of n = 4, 5, and 7 interferograms. These results are obtained with two configurations of the system, which are discussed.

引用

页数：6

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