24 May 2013 Digital processing of speckle photography to measure refractive index of a transparent plate
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Abstract
In this paper, an accurate and efficient method for measuring the refractive index of a transparent plate is developed. The refractive index is evaluated by using Fourier Transform Method (FTM), from a fringe pattern generated by digital speckle photography. The validity and accuracy of the method were confirmed with a standard reference material. Furthermore, the method is insensitive to environmental perturbations, and simple to implement, compared to the conventional index measurement methods providing similar accuracy.
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Nasser A. Moustafa, "Digital processing of speckle photography to measure refractive index of a transparent plate", Proc. SPIE 8791, Videometrics, Range Imaging, and Applications XII; and Automated Visual Inspection, 87911P (24 May 2013); doi: 10.1117/12.2020374; https://doi.org/10.1117/12.2020374
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