Zobrazeno 1 - 10
of 27
pro vyhledávání: '"B. G. Bravy"'
Autor:
V. I. Guriev, Yu. A. Chernyshev, S. A. Kashtanov, E. F. Makarov, B. G. Bravy, S A Sotnichenko, G K Vasiliev, V. Ya. Agroskin
Publikováno v:
Instruments and Experimental Techniques. 64:830-833
Abstract— A working process is proposed for an HF(DF) laser, in which evacuation of the reactor is completely excluded. The workflow consists of the following stages: (1) displacement of the reaction products, which are formed after initiation of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fda9a21670f7ede55d72a50f4dbc4804
https://doi.org/10.1134/s0020441221060014
https://doi.org/10.1134/s0020441221060014
Publikováno v:
Journal of the Optical Society of America B. 40:1031
We propose a comprehensive approach to describe the propagation regime of a tightly focused intense ultrashort laser pulse in a gaseous medium under conditions of its ionization, based on the use of a discrete aberration-free quasi-optical approximat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3017eae57bef07397fa1228e2e0fdb12
https://doi.org/10.1364/josab.484265
https://doi.org/10.1364/josab.484265
Autor:
G. K. Vasilyev, B. G. Bravy, S A Sotnichenko, S. A. Kashtanov, E. F. Makarov, V. I. Guryev, V. Ya. Agroskin, Yu. A. Chernyshev
Publikováno v:
Optics and Spectroscopy. 129:1-5
SF6 and H2 broadening and shift of the vibration–rotation lines in the fundamental band of hydrogen fluoride have been investigated. Using mathematical modeling of measuring the absorption of radiation of an electric discharge HF laser, the possibi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0959485eaa39de1b25e68a7a5c68ef2a
https://doi.org/10.1134/s0030400x21010021
https://doi.org/10.1134/s0030400x21010021
Autor:
Yu. A. Chernyshev, S. A. Kashtanov, E. F. Makarov, V. I. Guriev, G K Vasiliev, B. G. Bravy, S A Sotnichenko, V. Ya. Agroskin
Publikováno v:
Instruments and Experimental Techniques. 63:364-366
—A method for adjusting an unstable confocal resonator and determining its axis direction using an angular reflector is proposed. A semiconductor laser was used as an auxiliary laser, which set the direction of the cavity axis. A collimator was use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::109934562ba96814913f6d1daa8b138a
https://doi.org/10.1134/s0020441220030069
https://doi.org/10.1134/s0020441220030069
3.5-mJ 150-fs Fe:ZnSe hybrid mid-IR femtosecond laser at 4.4 μm for driving extreme nonlinear optics
Autor:
B G Bravy, Fedor Potemkin, Nikita V. Minaev, A. V. Pushkin, E. A. Migal, Vyacheslav M Gordienko, A. A. Sirotkin
Publikováno v:
Optics letters. 44(10)
We report on entering a new era of mid-IR femtosecond lasers based on amplification in a relatively new gain chalcogenide medium, Fe:ZnSe. Our hybrid all-solid-state laser system is based on direct pulse amplification of femtosecond seed from three-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6559913d6c721659760e17c7f2519483
https://pubmed.ncbi.nlm.nih.gov/31090729
https://pubmed.ncbi.nlm.nih.gov/31090729
Publikováno v:
Journal of Russian Laser Research. 37:465-472
We demonstrate an efficient method of mid-IR femtosecond-laser-pulse self-compression in transparent dielectrics based on a suitable selection of the parameters of the medium and laser radiation. We discuss the principle of selection of the nonlinear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a13730b9d5560cb1a53d7a037f6e2d1e
https://doi.org/10.1007/s10946-016-9598-0
https://doi.org/10.1007/s10946-016-9598-0
Autor:
Yu. V. Korostelin, A. A. Podshivalov, M. P. Frolov, V. I. Kozlovsky, V V Firsov, Vyacheslav M Gordienko, Fedor Potemkin, Yu. P. Podmar’kov, B. G. Bravy, Viktor T Platonenko
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 80:444-449
Concept of a solid-state femtosecond laser system with a multigigawatt power level in the 4–5 μm range has been proposed. The system contains an ultrashort pulse seeder, a two-stage chirped pulse amplifier based on a broadband Fe2+:ZnSe active ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf291784f742b2aabcd1e6e0623125c2
https://doi.org/10.3103/s1062873816040055
https://doi.org/10.3103/s1062873816040055
Publikováno v:
Journal of Physics: Conference Series. 1692:012004
We have performed theoretical calculations aimed at modeling the propagation dynamics of a focused femtosecond laser beam in a nonlinear gas medium. It was obtained that when helium is blown into the focal area, the intensity clamping level is about
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::139b874bbd68e5c5646f87b159eea431
https://doi.org/10.1088/1742-6596/1692/1/012004
https://doi.org/10.1088/1742-6596/1692/1/012004
Publikováno v:
Laser Physics Letters. 17:075402
A scheme of plasma–chemical mid-IR hydrogen fluoride (HF) lasing is proposed, in which electrons of femtosecond filament are produced in argon and give rise to a chain of plasma–chemical reactions occurring with SF6 and H2 added to the argon bath
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::436e93cfafa623ab304284a478e95cb6
https://doi.org/10.1088/1612-202x/ab8e43
https://doi.org/10.1088/1612-202x/ab8e43
Publikováno v:
Optics Communications. 344:7-11
The self-compression of sub-TW mid-IR ( λ =4–5 µm) femtosecond laser pulse in a non-linear dielectric medium was numerically modeled. Combination of the Kerr non-linearity and negative group velocity dispersion in CaF 2 crystal was found to resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18276ddc14a7581344a26fa3feebdd83
https://doi.org/10.1016/j.optcom.2015.01.036
https://doi.org/10.1016/j.optcom.2015.01.036