Surface shape measurement by phase-shifting digital holography with a wavelength shift

被引：128
|
作者：
Yamaguchi, Ichirou [1 ]
Ida, Takashi [1 ]
Yokota, Masayuki [1 ]
Yamashita, Kouji [1 ]
机构：
[1] Gunma Univ, Dept Elect Engn, Fac Engn, Gunma 3768515, Japan
来源：
APPLIED OPTICS | 2006年 / 45卷 / 29期
关键词：
D O I：
10.1364/AO.45.007610
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Surface contouring by phase-shifting digital holography is proposed and verified by experiments and numerical simulations. Digital holograms are recorded before and after mode hopping of a laser diode subject to current tuning, and the difference of the reconstructed phases at each wavelength is computed to deliver surface contours of a diffusely reflecting surface. Since normal incidence on the object is employed, the method does not need the removal of the tilt component and is free from the shadowing effect as advantages over the dual-incidence method proposed before by the first author. (c) 2006 Optical Society of America.
引用
收藏
页码：7610 / 7616
页数：7
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