Abstract

The bireflectance effect is observed when a light beam is internally reflected in an anisotropic material. Generally, an unpolarized light beam splits into four beams on reflection. A new method for simultaneous measurement of the three refractive indices, based on laser-beam splitting due to bireflectance, is demonstrated in the biaxial CdWO4 crystal. The three principal refractive indices of CdWO4 were obtained in the visible range. At λ = 633 nm, nX = 2.09 ± 0.01, nYnX = 0.052 ± 0.001, and nZnX = 0.114 ± 0.002.

© 1987 Optical Society of America

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