Ge–Te–Se- и Ge–Te–Se–S alloys as new materials for acousto-optic devices of the near-, mid-, and far-infrared spectral regions

The optical, acoustic, and acousto-optic properties of new Ge–Se–Te–S and Ge–Se–Te alloys are studied. As a result of parameter optimization, efficient acousto-optic materials transparent in a wide infrared range ($\lambda$ = 1.5–18 $\mu$m) are fabricated.