Single-shot dual-wavelength phase unwrapping in parallel phase-shifting digital holography

被引：38

作者：

Lee, Yonghee ^{[1
]}

Ito, Yasunori ^{[1
]}

Tahara, Tatsuki ^{[1
]}

Inoue, Junichi ^{[1
]}

Xia, Peng ^{[1
]}

Awatsuji, Yasuhiro ^{[1
]}

Nishio, Kenzo ^{[2
]}

Ura, Shogo ^{[1
]}

Matoba, Osamu ^{[3
]}

机构：

[1] Kyoto Inst Technol, Grad Sch Sci & Technol, Sakyo Ku, Kyoto 6068585, Japan

[2] Kyoto Inst Technol, Adv Technol Ctr, Sakyo Ku, Kyoto 6068585, Japan

[3] Kobe Univ, Grad Sch Syst Informat, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

OPTICS LETTERS | 2014年 / 39卷 / 08期

基金：

日本学术振兴会;

关键词：

3-DIMENSIONAL OBJECT RECOGNITION; SURFACE SHAPE MEASUREMENT; MICROSCOPY; LIGHT;

D O I：

10.1364/OL.39.002374

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a single-shot phase-unwrapping method using two wavelengths in parallel phase-shifting digital holography (PPSDH). The proposed method enables one to solve the phase ambiguity problem in PPSDH. We conducted an experiment of the proposed method using two lasers whose wavelengths are 473 and 532 nm. An object having about 1.9 mu m step, which is 7.1 times larger than the half wavelength of one of the lasers (266 nm), was fabricated by using vapor deposition of aluminum. Single-shot measurement of the height of the object was successfully demonstrated, and the validity of the proposed method was verified. (C) 2014 Optical Society of America

引用

页码：2374 / 2377

页数：4

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