Common-path phase-shifting interferometer with binary grating

被引：35
|
作者：
Meneses-Fabian, Cruz
Rodriguez-Zurita, Gustavo
Vazquez-Castillo, Jose F.
Robledo-Sanchez, Carlos
Arrizon, Victor
机构：
[1] Benemerita Univ Autonoma Puebla, Fac Ciencias Fisicomatemat, Puebla 72000, Mexico
[2] Inst Nacl Astrofis Opt & Elect, Puebla 72000, Mexico
来源：
OPTICS COMMUNICATIONS | 2006年 / 264卷 / 01期
关键词：
interference; phase-shifting interferometry; Ronchi rulings; spatial filtering;
D O I：
10.1016/j.optcom.2006.02.024
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An experimental setup for phase extraction of 2D phase distributions is presented. The system uses a common-path interferometer consisting of two windows in the input plane and a translating grating as spatial filter. In the output, interference of the fields associated with replicated images of the input windows is achieved by a proper choice of the windows spacing with respect to the grating period, the focal length of the transforming lens and the wavelength of the coherent illumination employed. Because in this type of grating interferometer a grating is placed as a spatial filter, the phase changes which are needed for phase-shifting interferometry can be easily performed with translations of the grating driven by a linear actuator. Some experimental results are shown. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：13 / 17
页数：5
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