Polarization analysis with digital holography by use of polarization modulation for single reference beam

被引：12
作者：
Yokota, Masayuki [1 ]
Terui, Yoshitaka [1 ]
Yamaguchi, Ichirou [1 ]
机构：
[1] Gunma Univ, Dept Elect Engn, Fac Engn, Kiryu, Gunma 3768515, Japan
来源：
OPTICAL ENGINEERING | 2007年 / 46卷 / 05期
关键词：
digital holography; polarization; Faraday rotator; flint glass fiber; photoelastic effect;
D O I：
10.1117/1.2740601
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Digital holography is applied to analyze the spatial distribution of the polarization state of light transmitted through anisotropic objects by successive hologram recording using polarization switching of the reference wave by an optical fiber Faraday rotator. For a preliminary object to confirm the principle of polarization analysis, a quarter wave plate (QWP) is used, and the distribution of the polarization ellipse over the object surface is analyzed for various azimuths of the QWP. By inserting a polarizer into a part of the object wave after the object as a reference area, a phase drift of the reference waves caused by polarization switching and/or environmental disturbances can be evaluated and compensated for by using the reference area. The principal axis and ellipticity are calculated and compared with their theoretical values. A good agreement between the experimental and theoretical values is observed. For an application, a photoelastic effect induced in a stressed PMMA specimen is also investigated. (C) 2007 Society of Photo-Optical Instrumentation Engineers.
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页数：7
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