Ge-Te-Se and 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 (λ = 1.5–18 μm) are fabricated.