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Measurement of Slopes of a Deformed Object Corresponding to Different Directions with Digital Holography

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Abstract

A digital holographic method that can be used for the simultaneous measurement of slopes of a deformed object in different directions is described in this paper. In this method, two holograms are recorded numerically under the normal and deformed states of the specimen, and two object waves are numerically calculated from these two holograms. The slopes corresponding to different directions are measured by superposing the two object waves with appropriate shifts. It is a superior method in regard to the simple experiment setup, the flexibility in handing the data, and the high quality phase maps.

Newport宣传-MKS新实验室计划
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中图分类号:TN24

所属栏目:Holography and Information Processing

收稿日期:2001-09-17

修改稿日期:2001-12-06

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作者单位    点击查看

LIU Cheng(刘诚):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
LI Liangyu(李良钰):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
LI Yinzhu(李银柱):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
CHEN Xiaotian(程笑天):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
LIU Zhigang(刘志刚):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
BO Feng(薄锋):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China
ZHU Jianqiang(朱健强):Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences, Shanghai 201800, China

备注:LIU Cheng was born in 1971. He received his M.S. degree in optics from Suzhou University in 1996. Now he is a Ph.D. candidate in Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences. His major interest is optical measurement and optical information processing.

【1】V. KrishnaKumar, V. M. Murukeshan, A. Kishen et al.. Opto-digital system for curvature measurement. Opt. Eng., 2001, 40(3):340~341

【2】Pramod K. Rastogi. Measurement of curvature and twist of a deformed object by electronic speckle-shearing pattern interferometry. Opt. Lett., 1996, 21(12):905~907

【3】D. K. Sharma, R. S. Sirohi, M. P. Kothiyal. Simultaneous measurement of slope and curvature with three-aperture speckle shearing interferometer. Appl. Opt., 1984, 23(10):1542~1545

【4】E. Cuche, F. Bevilacqua, C. Depeursinge. Digital holography for quantitative phase-contrast imaging. Opt. Lett., 1999, 24(5):291~293

引用该论文

LIU Cheng(刘诚),LI Liangyu(李良钰),LI Yinzhu(李银柱),CHEN Xiaotian(程笑天),LIU Zhigang(刘志刚),BO Feng(薄锋),ZHU Jianqiang(朱健强). Measurement of Slopes of a Deformed Object Corresponding to Different Directions with Digital Holography[J]. 中国激光(英文版), 2002, 11(6): 455-459

LIU Cheng(刘诚),LI Liangyu(李良钰),LI Yinzhu(李银柱),CHEN Xiaotian(程笑天),LIU Zhigang(刘志刚),BO Feng(薄锋),ZHU Jianqiang(朱健强). Measurement of Slopes of a Deformed Object Corresponding to Different Directions with Digital Holography[J]. Chinese Journal of Lasers B, 2002, 11(6): 455-459

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