Zobrazeno 1 - 10
of 28
pro vyhledávání: '"P A Svotin"'
Autor:
G. V. Smirnov, P. A. Svotin, R. E. Romanov, S. T. Durmanov, S. V. Gvozdev, A. G. Krasyukov, V. G. Vostrikov, D. D. Metlyaev, V. Yu. Dubrovskiy
Publikováno v:
Chemical and Petroleum Engineering. 56:755-760
Transmission spectra were measured and absorption coefficients were determined for gas condensate and oil using laser radiation with wavelength 1.07 μm. The dependences of the reflection coefficient on the laser-radiation angle of incidence on the s
Autor:
P A Svotin, V G Naumov
Publikováno v:
Quantum Electronics. 40:691-696
A numerical technique for calculating the time-dependent multimode lasing in an electron-beam-controlled CO2 laser at significant optical inhomogeneities caused by radiation self-action is presented. The reported calculations for subatmospheric press
Autor:
V G Naumov, P A Svotin
Publikováno v:
Quantum Electronics. 32:820-824
A method of analysis of lasing at several transverse modes in a nonstationary active medium with substantial optical inhomogeneities is developed. It is based on the assumption that the round-trip transit time for radiation in the resonator is much s
Autor:
V. G. Naumov, V. G. Vostrikov, P. A. Svotin, V. M. Demin, L. V. Shachkin, O. A. Blokhin, S. N. Matveev, N. A. Yakovenko, A. G. Krasyukov, V. M. Shashkov, V. D. Gavrilyuk
Publikováno v:
Chemical and Petroleum Engineering. 37:308-311
Autor:
P A Svotin, S. P. Pavlov, V V Valuev, A I Kutsenko, N E Sarkarov, A. P. Napartovich, V G Naumov
Publikováno v:
Quantum Electronics. 28:213-216
Multimode emission from a powerful cw CO2 laser with a transversely pumped active medium was investigated as a function of phase inhomogeneities, of laser characteristics, and of the type of an unstable cavity. The results obtained were compared with
Publikováno v:
Quantum Electronics. 26:661-664
An analysis is made of a self-consistent problem of steady lasing resulting in the emission of a few transverse modes in an unstable cavity with mirror distortions and a saturable active medium. Calculations are reported of the parameters of multimod
Publikováno v:
Quantum Electronics. 25:306-309
Experimental and theoretical investigations were made of the spectral and temporal characteristics of the radiation emitted by a cw fast-flow electric-discharge CO2 laser. A discharge chamber, separate from the cavity, was filled with a nitrogen-heli
Publikováno v:
Quantum Electronics. 28:14-16
A numerical investigation of a fast-flow CO2 laser with an unstable cavity and with phase inhomogeneities demonstrated that two stable mutimode lasing regimes can exist. In each regime the lasing characteristics depend continuously, in certain interv
Publikováno v:
SPIE Proceedings.
Propagation of laser beam in a turbulent atmosphere, at which are present resonance absorbing impurities, is featured by the parabolic equation of a quasi-optics. The spatial distribution of an impurity is nonuniform, fluctuation of its concentration
Autor:
P. A. Svotin, Vladimir M. Shashkov, A. G. Krasjukov, V. G. Vostrikov, Valery G. Naumov, L. V. Shachkin
Publikováno v:
SPIE Proceedings.
The general features of the electron beam sustained lasers and some peculiarities of their operation are described. The processes that determine plasma conductivity and energy balance in plasma are considered. The spectrum of laser radiation and dive