V.B. Voloshinov - Ph. D. (Phys.-Math.), Associate Professor, Department of oscillation physics , Faculty of Physics, Lomonosov Moscow State University. E-mail: volosh@phys.msu.ru L.A. Kulakova - Dr. Sc. (Phys.-Math.), Professor, Ioffe Physical-Technical Institute (St Petersburg). E-mail: L.Kulakova@mail.ioffe.ru N. Gupta - Ph. D., Head of Acousto-optics Laboratory, U.S.Army Research Laboratory (Adelphi). E-mail: neelam.gupta.civ@mail.mil V.S. Khorkin - Student, Department of oscillation physics , Faculty of Physics, Lomonosov Moscow State University. E-mail: vld_510@mail.ru G.A. Knyazev - Ph. D. (Phys.-Math.), Associate Professor, Department of photonics and microwave physics, Faculty of Physics, Lomonosov Moscow State University. E-mail: g_knyazev@mail.ru

We investigated optical glasses composed of tellurium, germanium, selenium and silicon. These glasses are promising for applications in acousto-optic instruments. The alloys are transparent in the range of wavelengths starting from λ = 1.5 μm and extending to λ = 20 μm. In this paper, we describe optical properties of these glasses such as the refractive index and the photoelastic coefficients. We also discuss data on magnitudes of acousto-optic figure of merit. Possibilities of application of the glasses in instruments of electromagnetic radiation control in near, middle and long infrared regions of spectrum are considered in the presentation. Technical characteristics of acousto-optic cell fabricated on base of the tellurium glass Si20Te80 operating at the wavelength of radiation 3.39 microns are presented in the final part of this paper.

 

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