Collinear acousto-optical tunable filter using CaMoO4 single crystal for processing of nonpolarized radiation

Abstract

Some results of investigation of acousto-optical tunable filtration system base on on calcium molybdate single crystal for arbitray polarized non-collimated optical beams are presented. Design principles of the double channel acousto-optical system to ensure spectral filtration of nonpolarized optical beams are also considered. The device uses the collinear light diffaction on a shear acoustic wave propagating along axis of calcium molybdate single crustal. A passive calcite prism arrangement is used to provide spatial separation of orthogonally polarized parts of an incident optical beam. The transmission function of the collinear acousto- optical cell is not sensitive to divergency of the analyzed radiation. The experimental data of the polarized radiation spectral filtration are also presented.