Investigation of the space--time characteristics of radiation from a pulsed CO/sub 2/ laser in the presence of small-scale inhomogeneities of the active medium

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Sov. J. Quant. Electron. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1070/QE1985v015n09ABEH007752· OSTI ID:6435725

Blinov, N A; Boiko, V V; Irodov, E I; Leont'ev, I A; Novoderezhkin, V I; Sinel'nikov, V P; Filippov, S S; Tsatsulin, M I; Cheburkin, N V

A theoretical analysis is made of the mechanism of formation of small-scale inhomogeneities in the active medium of a pulsed electron-beam-controlled CO/sub 2/ laser. The mechanism is associated with an absolute hydrodynamic instability of the plasma of a non-self-sustained discharge. The results are reported of an experimental investigation of the influence of these inhomogeneities on the structure of the radiation in the far-field zone and on the divergence of a laser beam with an unstable telescopic resonator. It is shown that the growth of small-scale imhomogeneities during a pulse may increase considerably the divergence of the output radiation and its anisotropy.

• Research Organization: M. V. Keldysh Institute of Applied Mathematics, Academy of Sciences of the USSR, Moscow
• OSTI ID: 6435725
• Journal Information: Sov. J. Quant. Electron. (Engl. Transl.); (United States), Journal Name: Sov. J. Quant. Electron. (Engl. Transl.); (United States) Vol. 15:9; ISSN SJQEA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ANISOTROPY
BEAMS
CARBON DIOXIDE LASERS
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
EMISSION SPECTRA
GAS LASERS
INSTABILITY
LASER CAVITIES
LASER RADIATION
LASERS
LEPTON BEAMS
PARTICLE BEAMS
PLASMA INSTABILITY
RADIATIONS
SPACE-TIME
SPECTRA