Abstract

Reflection by anisotropic media is characterized by the four reflection amplitudes r_pp, r_ss, r_ps, and r_sp. We show that r_pp can be zero at angles θ_pp, the anisotropic Brewster angles, and that a quantity related to θ_pp satisfies a quartic equation. When the refractive index of the medium of incidence lies between the ordinary and the extraordinary indices of the crystal, it is possible for r_ss to be zero at an angle θ_ss, and there exist four equivalent orientations of the crystal optic axis for which r_pp, r_ss, and either r_ps or r_sp are simultaneously zero, at angle of incidence equal to arctan (n_o/n₁).

© 1993 Optical Society of America

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