Abstract

The refractive indices of mixed AgCl_xBr_1−x crystals, with x ranging from 0 to 1, are measured at three wavelengths: 0.6328, 2.94, and 10.6 μm. A nonlinear dependence of the refractive index on composition is observed and explained on the basis of a simple Lorentz–Lorenz classical approximation. The theoretical dependence of the static dielectric constant on composition is also calculated. The same calculation is applied to KCl_xBr_1−x crystals, and, in both crystal systems, good agreement with experiment is obtained.

© 1993 Optical Society of America

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