Zobrazeno 1 - 10
of 40
pro vyhledávání: '"I. A. Khodasevich"'
Publikováno v:
Laser Physics Letters. 20:025401
Stimulated Raman scattering (SRS) of picosecond laser radiation at 532 and 355 nm in microcrystalline powders of potassium, sodium, and strontium nitrates has been studied. One anti-Stokes and three Stokes components were generated in all samples whe
Publikováno v:
Journal of Applied Spectroscopy. 87:249-255
Flexible SERS substrates were obtained by the photo-activated synthesis of silver nanoparticles in a thin (10–170 nm) layer of poly(acrylic acid) chemically grafted to the surface of a polypropylene fi lm. The plasmonic absorption and the SERS acti
Autor:
Pavel A. Chizhov, Vasily N. Lednev, Valentin A. Orlovich, Mikhail Ya. Grishin, Sergey Pershin, A. I. Vodchits, I. A. Khodasevich
Publikováno v:
Optics Letters.
Autor:
A. I. Vodchits, Pavel A. Chizhov, V. A. Orlovich, I. A. Khodasevich, M. Ya. Grishin, Sergey M. Pershin
Publikováno v:
2020 International Conference Laser Optics (ICLO).
Stimulated Raman scattering in water and liquid nitrogen is studied near the liquid-air interface at picosecond (15 and 57 ps) laser excitation. For the first time, it is shown that Raman threshold on the interface is crucially reduced (up to 30-fold
Avalanche-like up-conversion at nonlinear coupling of pumping channels: effect of ions concentration
Publikováno v:
2020 International Conference Laser Optics (ICLO).
We report results on avalanche-like effect in up-conversion on Er ions-doped in KGW crystal for concentrations of 1 and 10−4 wt.%. Our experimental and theoretical data point to the conclusion, that avalanche-like behavior observed earlier at low t
Autor:
N. V. Kuleshov, A.V. Mudryi, Elena Dunina, N.V. Gusakova, M.P. Demesh, A.S. Yasukevich, Anatoly Pavlyuk, I. A. Khodasevich, Alexey Kornienko, V. A. Orlovich
Publikováno v:
Optical Materials. 80:169-176
In this work we report the spectroscopic properties of Tm3+:NaBi(MoO4)2 crystals with the dopant concentrations of 0.7 at.% and 3 at.%. The energy levels of the Tm3+ in the NaBi(MoO4)2 host were determined from polarized optical absorption and photol
Autor:
M. A. Khodasevich, A. S. Grabtchikov, Alexey Kornienko, I. A. Khodasevich, V. A. Aseev, P. P. Pershukevich
Publikováno v:
Journal of Applied Spectroscopy. 84:986-994
Data on the observation of simultaneous upconversion on trace erbium and thulium ions in a KGd(WO4)2 crystal excited by IR radiation with the wavelength near 806 nm are presented. The change of excitation schemes with an increase in pumping level and
Publikováno v:
Journal of Non-Crystalline Solids: X, Vol 11, Iss, Pp 100065-(2021)
We report an experimental observation of the upconversion in fluorophosphate glasses doped with different concentrations of Tm3+ ions (from 1020 to 1015 ion/cm3) and a constant content of Yb3+ ions (1021 ion/cm3) when pumped by a diode laser with a w
Publikováno v:
Journal of Luminescence. 235:118033
A series of new fluorophosphate glasses co-doped with Er3+/Yb3+ions with composition 5 Ba(PO3)2–(90-x)(AlF3 –CaF2 –MgF2 –BaF2–SrF2)–5YbF3-xErF3, where x = 0, 0.1, 0.5, 1.0, 2.0, 3.0, 5.0 (mol.%) were developed. Impact of the Er3+ ions con
Autor:
A.N. Shekhovtsov, M.P. Demesh, W. Paszkowicz, A. Behrooz, Elena Dunina, P.V. Mateychenko, V. A. Orlovich, Alexey Kornienko, A.S. Yasukevich, I. A. Khodasevich, N. V. Kuleshov, M. B. Kosmyna, B. P. Nazarenko
Publikováno v:
Optical Materials. 60:387-393
Ca9Nd(VO4)7 single crystal was grown by the Czochralski method in inert atmosphere. The crystal structure and chemical composition were studied. Polarized absorption and luminescence spectra were investigated in details. It was found that the Ca9Nd(V