Polychromatic light based photorefractive correlator for 3-D motion measurement

被引：0
|
作者：
Kumar, A [1 ]
Tripathi, R [1 ]
Pati, GS [1 ]
Singh, K [1 ]
机构：
[1] Indian Inst Technol, Dept Phys, Photon Grp, New Delhi 110016, India
来源：
SELECTED PAPER FROM INTERNATIONAL CONFERENCE ON OPTICS AND OPTOELECTRONICS '98: SILVER JUBILEE SYMPOSIUM OF THE OPTICAL SOCIETY OF INDIA | 1999年 / 3729卷
关键词：
D O I：
10.1117/12.346766
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
We have proposed the use of polychromatic light based photorefractive correlator for 3-D motion measurement. The double exposures of speckle patterns can be recorded in a BaTiO3 crystal, thus providing a set of. interference fringes due to the polychromaticity of the light source and the 3-D displacement. Due to the fringes co,corresponding to the two illuminating wavelengths used in our experiment, a set of correlation output is generated which helps in, a better averaging of the results of measurements. This technique further contributes to the enhancement of accurcy and range of displacement measurements.
引用
收藏
页码：101 / 106
页数：6
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