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 Tl.sub.3 AsSe.sub. 3. 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.PPAn acousto-optically tunable laser employing an acousto-optical filter between the mirrors of a laser is also described.