Parallel two-step phase-shifting microscopic interferometry based on a cube beamsplitter

被引：29

作者：

Gao, Peng ^{[1
,2
]}

Yao, Baoli ^{[1
]}

Min, Junwei ^{[1
]}

Guo, Rongli ^{[1
]}

Zheng, Juanjuan ^{[1
]}

Ye, Tong ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Transient Opt & Photon, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2011年 / 284卷 / 18期

关键词：

Parallel phase-shifting interferometry (PPSI); Simultaneous phase-shifting interferometry (SPSI); Digital holography microscopy (DHM); Two-step phase-shifting interferometry; POINT-DIFFRACTION INTERFEROMETRY; DIGITAL HOLOGRAPHY; SPATIAL COHERENCE; POLARIZATION; ELEMENT;

D O I：

10.1016/j.optcom.2011.04.049

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Parallel two-step phase-shifting interferometry for microscopy is presented, and the recording condition for generalized two-step phase-shifting interferometry is discussed. A 45 degrees tilted cube beamsplitter enables to replicate the orthogonally linear polarized object and reference waves into two parallel beams, respectively. As a consequence, two interferograms with quadrature phase shift are obtained along the two beams, and phase reconstructed with an improved algorithm. To reconstruct the phase distribution from the two-step phase-shifting interferograms, a certain recording condition should be satisfied. However, the recording condition has not ever been discussed before. In this paper, the recording condition for the two-step phase-shifting interferometry is derived and that is: the intensity of reference wave should be no less than two times object wave intensity. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：4136 / 4140

页数：5

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