Common-path interferometer with a tri-window

被引：16
|
作者：
Hao, Bengong [1 ]
Shan, Mingguang [1 ]
Diao, Ming [1 ]
Zhong, Zhi [1 ]
Ma, Hongwen [1 ]
机构：
[1] Harbin Engn Univ, Coll Informat & Commun Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
OPTICS LETTERS | 2012年 / 37卷 / 15期
基金：
黑龙江省自然科学基金; 中国国家自然科学基金;
关键词：
PHASE-SHIFTING INTERFEROMETRY;
D O I：
10.1364/OL.37.003213
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A common-path interferometer is proposed with a tri-window. It is built using a 4f optical system with Ronchi ruling as a spatial filter. The input rectangular aperture is formed by three windows; the central window supports a phase object, and the other two are used for reference beams. Using an appropriate grating period relative to input aperture size, an interferogram containing three patterns can be obtained in the output plane. The object phase can then be reconstructed from the three patterns using just one interferogram. The experiments are carried out to demonstrate the feasibility and reliability of the proposed scheme. (C) 2012 Optical Society of America
引用
收藏
页码：3213 / 3215
页数：3
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