Simultaneous phase-shifting dual-wavelength interferometry based on two-step demodulation algorithm

被引：52

作者：

Zhang, Wangping ^{[1
]}

Lu, Xiaoxu ^{[1
]}

Fei, Leihuan ^{[1
]}

Zhao, Hui ^{[1
]}

Wang, Hanling ^{[1
]}

Zhong, Liyun ^{[1
]}

机构：

[1] S China Normal Univ, Lab Nanophoton Funct Mat & Devices, Guangzhou 510006, Guangdong, Peoples R China

来源：

OPTICS LETTERS | 2014年 / 39卷 / 18期

基金：

中国国家自然科学基金;

关键词：

MULTIWAVELENGTH DIGITAL HOLOGRAPHY; 2-WAVELENGTH INTERFEROMETRY; CHROMATIC ABERRATIONS; POLARIZING SEPARATION; MICROSCOPY; TRANSFORM;

D O I：

10.1364/OL.39.005375

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A simultaneous phase-shifting dual-wavelength interferometry based on two-step demodulation algorithm is proposed in this Letter. First, two lasers with different wavelengths go through the same inline phase-shifting interference system simultaneously, and a sequence of five frames of simultaneous phase-shifting dual-wavelength interferograms (SPSDWIs) with the special phase shifts are captured by a monochrome CCD. Subsequently, using the subtraction between the first SPSDWI and the other SPSDWI, each wavelength of two frames of single-wavelength interference images (SWIIs) without the background can be achieved. Finally, using two-step demodulation algorithm, the wrapped phase of each single-wavelength can be determined easily and quickly with high accuracy. (C) 2014 Optical Society of America

引用

页码：5375 / 5378

页数：4

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