Visually testing the dynamic character of a blazed-angle adjustable grating by digital holographic microscopy

被引:10
作者
Qin, Chuan [1 ,2 ]
Zhao, Jianlin [1 ,2 ]
Di, Jianglei [1 ,2 ]
Wang, Le [1 ,2 ]
Yu, Yiting [3 ]
Yuan, Weizheng [3 ]
机构
[1] Northwestern Polytech Univ, Inst Opt Informat Sci & Technol, Xian 710072, Peoples R China
[2] Northwestern Polytech Univ, Sch Sci, Shaanxi Key Lab Opt Informat Technol, Xian 710072, Peoples R China
[3] Northwestern Polytech Univ, Sch Mechatron, Shaanxi Key Lab Micro & Nano Electromech Syst, Xian 710072, Peoples R China
关键词
MICROELECTROMECHANICAL SYSTEMS; CONFOCAL MICROSCOPY;
D O I
10.1364/AO.48.000919
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We employed digital holographic microscopy to visually test microoptoelectromechanical systems (MOEMS). The sample is a blazed-angle adjustable grating. Considering the periodic structure of the sample, a local area unwrapping method based on a binary template was adopted to demodulate the fringes obtained by referring to a reference hologram. A series of holograms at different deformation states due to different drive voltages were captured to analyze the dynamic character of the MOEMS, and the uniformity of different microcantilever beams was also inspected. The results show this testing method is effective for a periodic structure. (C) 2009 Optical Society of America
引用
收藏
页码:919 / 923
页数:5
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