Zobrazeno 1 - 10
of 79
pro vyhledávání: '"V. A. Konyushkin"'
Autor:
P. A. Popov, A. A. Krugovykh, A. A. Zentsova, V. A. Konyushkin, A. N. Nakladov, S. V. Kuznetsov, P. P. Fedorov
Publikováno v:
Inorganic Materials. 58:396-402
Autor:
P. A. Popov, A. A. Krugovykh, A. N. Nakladov, Pavel P. Fedorov, V. A. Konyushkin, Sergey V. Kuznetsov
Publikováno v:
Inorganic Materials. 57:629-633
The thermal conductivity κ of single crystals of the Sr1–xBaxF2 fluorite solid solution series has been measured in the temperature range 50–300 K by an absolute steady-state axial heat flow technique. The thermal conductivity has been shown to
Autor:
E. V. Chernova, P. A. Popov, V. A. Konyushkin, A. N. Nakladov, A. A. Pynenkov, K. N. Nishchev, Pavel P. Fedorov, Sergey V. Kuznetsov
Publikováno v:
Inorganic Materials. 56:975-981
Single crystals of Ca1 – ySryRхF2 + х (R = Ho, Pr) solid solutions with high optical quality have been grown by the Bridgman technique in vacuum using a fluorination atmosphere. The thermal conductivity of the Ca0.60Sr0.40 – хHoхF2 + х solid
Autor:
D. Saleta Reig, Andrey Turshatov, A. N. Nakladov, Sergey V. Kuznetsov, Ian A. Howard, Dmitry Busko, Pavel P. Fedorov, V. A. Konyushkin, Ute Resch-Genger, Christian Würth, Bettina Grauel, Bryce S. Richards
Publikováno v:
Journal of Materials Chemistry C. 8:4093-4101
Synthesis of new upconversion (UC) materials that can convert near-infrared excitation light into visible emission light with high efficiency has crucial importance for energy and bio-applications. Herein, SrF2 single crystals with a doping concentra
Autor:
S. V. Kuznetsov, Vadim V. Semashko, E.I. Madirov, A.R. Khadiev, Alexey S. Nizamutdinov, A. N. Nakladov, M. A. Marisov, V. A. Konyushkin, Valery V. Voronov
Publikováno v:
Journal of Applied Spectroscopy. 86:795-801
Spectral and luminescence characteristics of GdF3:Pr:Yb and YF3:Pr:Yb solid solutions synthesized by crystallization from the melt were investigated. Down-conversion luminescence of Yb3+ in the region of 2F5/2 → 2F7/2 transitions with 445-nm excita
Autor:
Alexander G. Papashvili, A. N. Nakladov, O.K. Alimov, Maxim E. Doroshenko, Kseniia A. Pierpoint, V. A. Konyushkin
Publikováno v:
Journal of Luminescence. 208:475-478
The spectroscopic properties of Tm3+ optical centers at the 3F4-3H6 two-micron transition in CaF2-YF3:Tm3+ solid-solution crystals are studied by the selective laser excitation technique. The low-temperature (14 K, 77 K) time-resolved fluorescence sp
Autor:
A.V. Nekhoroshikh, Maxim E. Doroshenko, Kseniia A. Pierpoint, V. A. Konyushkin, O.K. Alimov, Alexander G. Papashvili
Publikováno v:
2020 International Conference Laser Optics (ICLO).
Different Ho3+ ion optical centers in CaF 2 and SrF 2 crystals were separated and their spectroscopic properties at the 5I 8 ↔5I 7 laser 2.1 μm transition were investigated at 14K. For the first time room temperature lasing is obtained in Ho:SrF 2
Autor:
B. Denker, K. V. Lopukhin, Yu. V. Senatsky, V. A. Petukhov, Yu. L. Kopylov, O. A. Burdukova, Boris N. Chichkov, Petr G. Zverev, N. E. Bykovsky, V. A. Konyushkin
Publikováno v:
2020 International Conference Laser Optics (ICLO).
Experiments on lasing in slurry-like active media based on dense mixtures of laser crystal or glass microparticles with immersion liquids are reported.
Autor:
E.A. Vagapova, Leonid Dolgov, E.E. Vinogradova, Vladimir Hizhnyakov, Aleksei Treshchalov, V. A. Konyushkin, Yu.V. Orlovskii, Viktor Peet, E.O. Orlovskaya
Publikováno v:
Journal of Luminescence. 234:117988
Earlier, it was shown by the EPR method that at a very low concentration of the Nd3+ ion in the Nd3+:CaF2 crystal, highly symmetric cubic centers with the Oh symmetry are formed. In the present study, the optical centers of the Nd3+ ion with an anoma
Publikováno v:
Crystallography Reports. 62:283-287
The thermal conductivity of single crystals of Ba1–х R х F2 + х (R = La, Ce, Nd, or Gd) solid solutions has been experimentally investigated in the temperature range of 50–300 K. With an increase in the content of rare-earth elements, the ther