Abstract
Ternary Si15Ge(Ga)5Te80, Si19.7Te78.7Se1.6, Si19.2Te76.8Se4, and Ge19Te72Se9 telluride glasses were synthesized. Electrical, acoustic, acoustooptical properties, and the dispersion of optical transmittance of these films were studied in a wide range of temperatures and frequencies. Comparative analysis of the results obtained is performed. Possible mechanisms of the observed phenomena are discussed. It is shown that Ge19Te72Se9 alloy is quite competitive with Si20Te80 alloy for the fabrication of highly efficient acoustooptical devices with a wide range of applications in the middle IR spectral region (2–12 µm).
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