Interferometric Method to Determine the Birefringence for an Anisotropic Material | ||||
Egyptian Journal of Solids | ||||
Article 11, Volume 26, Issue 2, 2003, Page 231-239 PDF (195.9 K) | ||||
DOI: 10.21608/ejs.2003.150161 | ||||
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Abstract | ||||
A simple interferometric technique was used for measuring the absolute birefringence of an anisotropic material. The sample has constant thickness. It was placed between crossed polarizers and illuminated with a parallel beam of monochromatic light. The resulting interferograms were analyzed to deduce the birefringence and its dispersion across the visible spectrum. A Cauchy formula was applied to fit the experimental data. The same technique was used for a variable thickness with constant rate (a wedge form) of the same sample. Interference fringes was formed in the photographic plate. The value of the birefrengence was also measured. | ||||
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