Five-frame phase-shifting algorithm insensitive to diode laser power variation

被引:11
|
作者
Afifi, M
Nassim, K
Rachafi, S
机构
[1] Univ Chouaib Doukkali, Fac Sci, El Jadida, Morocco
[2] Fac Sci Ben Msik, Casablanca, Morocco
关键词
digital speckle pattern interferometry; phase-shifting algorithm; laser diode;
D O I
10.1016/S0030-4018(01)01411-0
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The purpose of the present work is an elaboration a five-frame phase-shifting algorithm. which is insensitive to a bias intensity modulation introduced by a laser diode used as a phase shifter. This study, based on Fourier description, gives criterions on frequency spectra of sampling functions. The linear phase-shift miscalibration and the quadratic nonlinearity of detector error are evaluated for these algorithms. (C) 2001 Published by Elsevier Science B.V.
引用
收藏
页码:37 / 42
页数:6
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