Parallel two-step phase-shifting digital holography

被引：185

作者：

Awatsuji, Yasuhiro ^{[1
]}

Tahara, Tatsuki ^{[1
]}

Kaneko, Atsushi ^{[1
]}

Koyama, Takamasa ^{[1
]}

Nishio, Kenzo ^{[1
]}

Ura, Shogo ^{[1
]}

Kubota, Toshihiro ^{[2
]}

Matoba, Osamu ^{[3
]}

机构：

[1] Kyoto Inst Technol, Sakyo Ku, Div Elect, Kyoto 6068585, Japan

[2] Kubota Hologram Lab Co, Uji 6110042, Japan

[3] Kobe Univ, Dept Comp & Syst Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

APPLIED OPTICS | 2008年 / 47卷 / 19期

关键词：

D O I：

10.1364/AO.47.00D183

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a parallel two-step phase-shifting digital holography technique capable of instantaneous measurement of three-dimensional objects, with a view toward measurement of dynamically moving objects. The technique is based on phase-shifting interferometry. The proposed technique carries out the two-step phase-shifting method at one time and can be optically implemented by using a phase-shifting array device located in the reference beam. The array device has a periodic two-step phase distribution, and its configuration is simplified compared with that required for three-step and four-step parallel phase-shifting digital holographies. Therefore the optical system of the proposed technique is more suitable for the realization of a parallel phase-shifting digital holography system. We conduct both a numerical simulation and a preliminary experiment in the proposed technique. The results of the simulation and the experiment agree well with those of sequential phase-shifting digital holography, and results are superior to those obtained by conventional digital holography using the Fresnel transform alone. Thus the effectiveness of the proposed technique is verified. (c) 2008 Optical Society of America

引用

页码：D183 / D189

页数：7

共 60 条

[31] Two-step phase-shifting interferometry and its application in image encryption [J].