Search Results - "Pyatyshev, A. Yu"

Forward and backward stimulated Brillouin scattering in aqueous suspension of SiO2 spherical nanoparticles by Gorelik, V. S., Bunkin, A. F., Davydov, M. A., Fedorov, A. N., Pershin, S. M., Pyatyshev, A. Yu, Wu, Mengyuan

“…Both backward and forward directed Stimulated Brillouin Light Scattering (SBLS) are observed in an aqueous suspension of SiO2 nanoparticles with diameters of…”
Get full text

Stimulated Raman Scattering in Diamond Microcrystals Synthesized at High Pressures and High Temperatures by Gorelik, V. S., Pyatyshev, A. Yu, Vodchits, A. I.

“…We report the stimulated Raman scattering of light in synthetic diamond microparticles of close sizes (250–300 μm) with the generation of three Stokes…”
Get full text

Anomalous Increase in Spectral Intensity of Soft-Mode Raman Scattering near the Temperature of the Ferroelectric Phase Transition in Lithium Tantalate Crystals by Gorelik, V. S., Pyatyshev, A. Yu

“…Reported are the results of studying the sharp increase in the spectral intensity at the lattice soft mode near the temperature of the phase transition in the…”
Get full text

Raman Scattering in Single Crystals of Lithium Niobate Co-Doped with Iron and Cerium by Pyatyshev, A. Yu, Sverbil, P. P., Sidorov, N. V., Palatnikov, M. N.

“…The conditions of the excitation of transverse and longitudinal polar modes in Raman scattering (RS) processes in lithium niobate crystals co-doped with iron…”
Get full text

Isofrequency Temperature Anomalies of Raman Scattering Intensity in Quartz Crystals by Gorelik, V. S., Pyatyshev, A. Yu

“…Isothermal dependences of Raman scattering intensity i ( ω ′; T = const) on frequency Ω = ω 0 − ω ′ and isofrequency temperature dependences of i (Ω = ω 0 − ω…”
Get full text

Raman Scattering on the Effective Soft Mode for Lithium Niobate Crystals by Gorelik, V. S., Pyatyshev, A. Yu

“…The evolution of Raman spectra in a wide range of temperatures that includes the ferroelectric transition point in lithium niobate single crystals is studied…”
Get full text

Stimulated Raman Scattering of Light in Glycerol under Picosecond Laser Excitation by Pyatyshev, A. Yu, Skrabatun, A. V., Rusak, A. A., Sverbil, P. P., Voinov, Yu. P.

“…We record stimulated Raman scattering spectra in chemically-pure glycerol with the formation of two Stokes satellites with equidistant Raman frequencies ν =…”
Get full text

RESONANT TWO-PHOTON-EXCITED LUMINESCENCE IN ZINC-PHOSPHATE OPTICAL GLASS DOPED WITH SODIUM URANATE by Savransky, V. V., Kupov, M. R., Pyatyshev, A. Yu, Sverbil, P. P.

“…It was found that resonant two-photon-excited luminescence is observed in zinc-phosphate optical glass doped with sodium uranate with a concentration of 2.8%,…”
Get full text

Photoluminescence of Copper-Doped Lithium Niobate Crystals by Gorelik, V. S., Pyatyshev, A. Yu, Sidorov, N. V.

“…The photoluminescence (PL) of copper-doped lithium niobate single crystals is studied using different UV–Vis light-emitting diodes and a pulse-periodic laser…”
Get full text

Lattice modes of the chirally pure and racemic phases of tyrosine crystals by Belyanchikov, M. A., Gorelik, V. S., Gorshunov, B. P., Pyatyshev, A. Yu

“…High-Q librational modes have been found to be present in the infrared absorption and Raman spectra of chirally pure L-tyrosine. Such modes can serve as…”
Get full text

Optical Properties of Copper-Doped Lithium Niobate Crystals by Gorelik, V. S., Palatnikov, M. N., Pyatyshev, A. Yu, Sidorov, N. V., Skrabatun, A. V.

“…We have studied the optical properties of copper-doped lithium niobate crystals using semiconductor light-emitting diodes and lasers emitting in the visible…”
Get full text

Raman scattering in a ferroelectric sodium nitrite crystal by Gorelik, V. S., Pyatyshev, A. Yu, Krylov, A. S.

“…Raman spectra of the ferroelectric sodium nitrite are recorded over a wide spectral range at different temperatures, including the ferroelectric phase…”
Get full text

Laser spectroscopy and dynamics of crystal lattices of chirally pure and racemic phases of amino acids by Belyanchikov, M. A., Gorelik, V. S., Gorshunov, B. P., Pyatyshev, A. Yu

“…Strong sharp lines due to the librational modes characterized by a pseudoscalar symmetry type have been found in the low-frequency Raman spectra of the…”
Get full text

Stimulated overtone Raman scattering by polar modes in lithium tantalate by Pyatyshev, A. Yu

“…In stimulated Raman scattering spectra in a lithium tantalate single crystal, for the forward scattering geometry, intense Stokes and anti-Stokes satellites…”
Get full text

Effect of Deuteration on Raman Scattering in Single Crystals of Potassium Alum by Avakyants, L. P., Skrabatun, A. V., Pyatyshev, A. Yu

“…ABSTRACT Raman spectra of KAl(SO 4 ) 2 ·12H 2 O and KAl(SO 4 ) 2 ·12D 2 O crystals in the range of 10–4000 cm −1 were experimentally obtained and studied. An…”
Get full text

Anharmonicity of crystal lattice vibrations and superionic conductivity in solid solutions Li0.12Na0.88TayNb1-yO3 with a perovskite structure by Sidorov, N.V., Palatnikov, M.N., Pyatyshev, A.Yu

“…In the wavenumber range 1000–2000 cm−1, weak second-order spectra have been discovered for the first time in the Raman spectra of the ferroelectric phase of…”
Get full text

Raman and Hyper Raman opalescence on the soft mode in barium sodium niobate crystals by Gorelik, V.S., Pyatyshev, A.Yu

“…A strong increase in the spectral intensity of Raman scattering (Raman opalescence effect) at the polar soft mode, responsible for the instability of the…”
Get full text

Features of the defect structure of a lithium-gradient nonlinear optical single crystal LiNbO3 and their manifestation in the Raman spectra by Sidorov, N.V., Pyatyshev, A.Yu, Galutskiy, V.V., Stroganova, E.V., Skrabatun, A.V.

“…[Display omitted] •Raman spectra of gradient LiNbO3 registered in a wide frequency range.•The composition gradient corresponds to a monotonic change in the…”
Get full text

Growth, microstructure and optical characteristics of doped LiNbO3:Gd and LiNbO3:Cu:Gd lithium niobate crystals by Palatnikov, M.N., Sidorov, N.V., Pyatyshev, A. Yu, Sverbil, P.P., Teplyakova, N.A., Makarova, O.V.

“…Double- and single-doped lithium niobate (LN) crystals were grown by Czochralski at air from platinum crucibles: sample 1 ([Cu] = 0.57, [Gd] = 0.07 wt%),…”
Get full text

Raman scattering in diamond nano- and microcrystals, synthesized at high temperatures and high pressures by Gorelik, V.S., Pyatyshev, А.Yu

“…The dependences of the Raman spectra of microdiamonds synthesized at high temperatures and high pressures on sizes in the range of 0.1–73.0 μm have been…”
Get full text