Zobrazeno 1 - 10
of 177
pro vyhledávání: '"V.I. Levchenko"'
Publikováno v:
Современные наукоемкие технологии (Modern High Technologies). 1:25-31
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5cb987f7bfdbcfb74918de34b27c36f
https://doi.org/10.17513/snt.39341
https://doi.org/10.17513/snt.39341
Publikováno v:
Scientific and Technical Bulletin of the Institute of Oilseed Crops NAAS. :33-45
Samples of amaranth were involved in the introduction and study in the conditions of zaporizhia region in the laboratory of genetics and genetic resources: volotisty, white elbrus, kharkiv 1, zernovy, indian. According to other researchers, it is kno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57e97c00c51033810a0f79e4198017d3
https://doi.org/10.36710//ioc-2021-31-04
https://doi.org/10.36710//ioc-2021-31-04
Publikováno v:
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. 18:158-162
The research results of calves suffering from hypo plastic anemia of iron content, enzyme activity of antioxidant protection (AOP) and the exchange metal protein are listed in the paper.Trace element ration adjustments of calves were performed by inc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f5a8a61178952b67fc0f26ad074b0b1
https://doi.org/10.15421/nvlvet7135
https://doi.org/10.15421/nvlvet7135
Publikováno v:
Journal of Applied Spectroscopy. 72:818-823
The phototropic properties of Fe:ZnSe, Co:ZnSe, and Co:ZnS single crystals have been investigated. It is shown that these crystals can be used to advantage as the saturable absorbers in solid-state erbium lasers emitting in the region of the 3-μm ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::753c67fe266b8c98f1e233b1db28f993
https://doi.org/10.1007/s10812-006-0009-0
https://doi.org/10.1007/s10812-006-0009-0
Autor:
Sergey E. Sverchkov, Boris I. Galagan, V.I. Levchenko, Boris I. Denker, V. G. Shcherbitskii, N. V. Kuleshov, L.I. Postnova, V. E. Kisel
Publikováno v:
Quantum Electronics. 35:611-614
A diode-pumped, passively Q-switched 1.54-μm erbium glass laser is studied. Zinc selenide (ZnSe) crystals doped with Co2+ and Cr2+ ions and magnesium—aluminium spinel (MgAl2O4) crystals doped with Co2+ ions were used as saturable absorbers in Q sw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c39b5761c4a929d31ddf42762f5a848f
https://doi.org/10.1070/qe2005v035n07abeh008954
https://doi.org/10.1070/qe2005v035n07abeh008954
Autor:
Bernard Ferrand, Michael Fromager, V.N. Yakimovich, V.I. Levchenko, Richard Moncorgé, N. V. Kuleshov, Sylvain Girard, V.G. Shcherbitsky
Publikováno v:
Applied Physics B: Lasers and Optics. 74:367-374
A rigorous approach taking into account both the temporal and spatial distributions of the pulsed probe beam used for transmission measurements of solid-state saturable absorbers is applied to characterise these absorbers accurately. The use of this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c43334dc460d86ff03d5e91f5899ad7b
https://doi.org/10.1007/s003400200809
https://doi.org/10.1007/s003400200809
Autor:
V. G. Shcherbitskii, N. V. Kuleshov, M I Demchuk, Viktor Kisel, A. V. Podlipenskii, Sergey E. Sverchkov, V.N. Yakimovich, Boris I. Denker, Stefan Kuck, V.I. Levchenko, M. Mond, G. Huber
Publikováno v:
Journal of Applied Spectroscopy. 69:254-259
The spectroscopic properties of Cr2+ ions in Cr:Cd1−xMnxTe (CMT) crystals are studied, and the possibility of using these impurity crystals as active media and saturable absorbers of solid‐state lasers of medium IR range is demonstrated. The band
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68b7452ce0eef1379ef141c9fcf04503
https://doi.org/10.1023/a:1016145420195
https://doi.org/10.1023/a:1016145420195
Autor:
M.I Demchuk, V.I. Levchenko, Richard Moncorgé, Sylvain Girard, V.N. Yakimovich, V.G. Shcherbitsky, Alexander Podlipensky, N. V. Kuleshov
Publikováno v:
Optics Communications. 192:65-68
For the first time, to our knowledge, passive Q-switching of 2.09 μm Ho,Tm,Cr:YAG laser has been demonstrated using Cr2+:Cd0.55Mn0.45Te as the saturable absorber. A pulse duration of about 200 ns and an output pulse energy up to 8 mJ were obtained w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bedd890f860402c8708a4c6a96999c6
https://doi.org/10.1016/s0030-4018(01)01025-2
https://doi.org/10.1016/s0030-4018(01)01025-2
Autor:
V.N. Yakimovich, V.I. Konstantinov, V.I. Levchenko, V. P. Mikhailov, Alexander Podlipensky, N. V. Kuleshov, L.I. Postnova, V.G. Shcherbitsky
Publikováno v:
Optics Communications. 167:129-132
The laser properties of Cr 2+ :ZnSe crystals obtained by diffusion doping method was investigated under pumping by the 1.6 μm output of a Nd:YAG laser-pumped Ba(NO 3 ) 2 Raman laser. A slope efficiency of 45%, a laser threshold of 12 μJ and round-t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::939cc2002406a37a6a666cba0c70c1ba
https://doi.org/10.1016/s0030-4018(99)00289-8
https://doi.org/10.1016/s0030-4018(99)00289-8
Autor:
V.I. Levchenko, V.N. Yakimovich, V. P. Mikhailov, L.I. Postnova, N. V. Kuleshov, V.I. Konstantinov
Publikováno v:
Journal of Crystal Growth. :980-983
Cr-doped zinc selenide single crystals have been prepared by a two stage process. In the first stage, undoped single crystals were grown by a sublimation traveling heater method (STHM) without seeding. The high quality of the as-grown crystals was co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::503dd6733c62453050b54e61b623c3d5
https://doi.org/10.1016/s0022-0248(98)01098-7
https://doi.org/10.1016/s0022-0248(98)01098-7