Collinear acousto-optical tunable filter and acousto-optically tunable laser

摘要

A collinear, acousto-optical, tunable filter is described. A well-collimated, polarized beam of light enters a crystal of Tl3AsSe3. A sound wave generated in the crystal collinear to the light rotates the plane of polarization of the light. A method of analyzing a light spectrum is also disclosed.