Browsing by Author "Atuchin, V. V."

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Optical Properties of TiO2 Films Deposited by Reactive Electron Beam Sputtering
(2017-10-01)
Kruchinin, V. N.
;
Perevalov, T. V.
;
Atuchin, V. V.
;
Gritsenko, V. A.
;
Komonov, A. I.
Titanium dioxide (anatase, a-TiO2) films have been prepared by electron beam sputtering of a TiO2 target in reactive atmosphere and their structural, microstructural, and optical properties were evaluated by reflection high- energy electron diffraction (RHEED) and x-ray diffraction (XRD) analyses, atomic force microscopy (AFM), and spectroscopic ellipsometry (SE). Different reflection models for determination of film optical parameters were tested and compared. The dispersive optical parameters were defined using the Tauc-Lorentz model by SE in the photon energy range of E = 1.12-4.96 eV. The films were transparent at E < 3 eV, but noticeable absorption was detected at E > 3 eV. The bandgap was estimated at the level of E (g) ae 3.44 eV.
Study of GaSe1-xSx Properties for Terahertz Applications
(2009)
Sarkisov, S. Yu.
;
Andreev, Yu. M.
;
Atuchin, V. V.
;
Morozov, A. N.
;
Kazakov, A. V.
For prospective nonlinear crystals GaSe1-xSx experimental study of second harmonic generation processes of Er3+:YSGG-, CO2- and CO-lasers has been performed, control experiment on difference frequency generation of two lines Of CO2-laser has been realized, the transmission spectra and dispersion of complex refractive indices in terahertz range have been measured.