Determination of the refractive index and thickness of holographic silver halide materials by use of polarized reflectances |
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Authors: | Beléndez Augusto Beléndez Tarsicio Neipp Cristian Pascual Inmaculada |
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Affiliation: | Departamento de Física, Ingeniería de Sistemas y Teoría de la Se?al, Universidad de Alicante, Spain. augusto@disc.ua.es |
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Abstract: | A method to determine the refractive index and thickness of silver halide emulsions used in holography is presented. The emulsions are in the form of a layer of film deposited on a thick glass plate. The experimental reflectances of p-polarized light are measured as a function of the incident angles, and the values of refractive index, thickness, and extinction coefficient of the emulsion are obtained by using the theoretical equation for reflectance. As examples, five commercial holographic silver halide emulsions are analyzed. The procedure to obtain the measurements and the numerical analysis of the experimental data are simple, and agreement of the calculated reflectances, by use of the thickness and refractive index obtained, with the measured reflectances is satisfactory. |
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