Dependence of the characteristics of acousto-optic modulators and filters based on single-crystal media on the radiation wavelength in the infrared and terahertz ranges

Abstract

Abstract A theoretical study of the dependence of the spectral resolution of acousto-optic filters and the maximum number of resolved elements of acousto-optic deflectors on the radiation wavelength in the range 40 − 100 μm was carried out. Semiconductor single crystals with a cubic crystal lattice, which are transparent in the considered range, were chosen as the material of acousto-optic devices. It is shown that with increasing wavelength from 40 to 100 μm, the spectral resolution of the filters increases from 10 to 103, and the maximum number of resolved elements of the deflectors decreases from 104 to 102.