| 摘要 |
An anisotropic single-crystal polarizing prism for separation of the non-polarized beam into two orthogonally-polarized beams with minimal optical losses. The prism has a tetrahedral shape and is formed by four base planes having a predetermined angular orientation with respect to each other so that one of the polarized beams exists the prism at a Brewster angle by being refracted on the third base plane, while the second beam is reflected from the third base plane with total internal reflection and exits the prism through the fourth base plane in the normal direction thereto. The prisms is manufactured by the method of the invention which involves specific procedures of orienting of crystal at preliminary calculated angles to the planes of prism faces, and cutting the aforementioned base planes with reference to the calculated angles. The prism of the invention is a single-crystal device which is free of cementing connections and microscopic air gaps inherent in conventional prisms combined from separate elements. The single-crystal prism of the invention possesses characteristics unattainable in know polarizing single-crystal prisms.
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