Abstract
The passage of a light ray through an anisotropic medium with a refractivity gradient is analyzed here, on the basis of the Fermi principle, and the results are applied to an electrooptical deflector crystal. Two modes of deflector operation are considered, corresponding to different polarizations of a light ray relative to the plane in which it deflects. It is shown that, when the refractive index varies only little (δn/n ≪ 1), the linear theory describes very accurately both modes.
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