Realization of a polarizer employing the combined effects of birefringence and diffraction

Abstract

A polarizer that uses the combined effects of birefringence and diffraction has been realized experimentally. A sheet of calcite was taken as the substrate, and a series of grooves with a sawtooth profile was manufactured on its surface by optical grinding and polishing. The sample polarizer shows good polarizing performance in test. The measured extinction ratio is better than $2\times {10}^{-4}$ and can be improved further.

© 1997 Optical Society of America

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