29 April 1999 Polychromatic light-based photorefractive correlator for 3D motion measurement
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Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346766
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India
Abstract
We have proposed the use of polychromatic light based photorefractive correlator for 3D 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 3D displacement. Due to the fringes 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 measurement. This technique further contributes to the enhancement of accuracy and range of displacement measurements.
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Arvind Kumar, Arvind Kumar, Renu Tripathi, Renu Tripathi, G. S. Pati, G. S. Pati, Kehar Singh, Kehar Singh, } "Polychromatic light-based photorefractive correlator for 3D motion measurement", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); doi: 10.1117/12.346766; https://doi.org/10.1117/12.346766
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