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Proceedings Paper

Supersonic electron beam controlled discharge CO laser
Author(s): Andrei A. Ionin; Andrei A. Kotkov; M. G. Minkovsky; Dmitrii V. Sinitsyn
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Paper Abstract

An electron-beam controlled discharge (EBCD) supersonic CO-laser operating at transient conditions of excitation (?dis /?tr~1) has been investigated. Mach number equaled 3.0. The e-beam current density was 1 mA/cm2 . The discharge has been excited between two electrodes spaced 41 mm. The axis of the main resonator has been shifted from the discharge region centre by 120 mm downstream. Small additions of H2 (1-2%) into CO:N2: Ar gas mixture resulted in the increase of a specific input energy, but the efficiency has been reduced. Maximum efficiency reached 20 % . The output peak power has been gradually growing with the growth of the gas density,and reached 90 kW ( the gas density being 0.5 Amagat ). Five additional cavities have been placed downstream. The usage of the cavities has allowed us to measure the lifetime of the inverse population in CO:N2: Ar mixtures.

Paper Details

Date Published: 1 February 1991
PDF: 4 pages
Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); doi: 10.1117/12.25998
Show Author Affiliations
Andrei A. Ionin, P. N. Lebedev Physical Institute (Russia)
Andrei A. Kotkov, P. N. Lebedev Physical Institute (Russia)
M. G. Minkovsky, P. N. Lebedev Physical Institute (Russia)
Dmitrii V. Sinitsyn, P. N. Lebedev Physical Institute (Russia)


Published in SPIE Proceedings Vol. 1397:
8th Intl Symp on Gas Flow and Chemical Lasers
Concepcion Maroto Domingo; Jose M. Orza, Editor(s)

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