Supersonic electron beam controlled discharge CO laser

Andrei A. Ionin; Andrei A. Kotkov; M. G. Minkovsky; Dmitrii V. Sinitsyn

doi:10.1117/12.25998

1 February 1991 Supersonic electron beam controlled discharge CO laser

Andrei A. Ionin, Andrei A. Kotkov, M. G. Minkovsky, Dmitrii V. Sinitsyn

Proceedings Volume 1397, 8th Intl Symp on Gas Flow and Chemical Lasers; (1991) https://doi.org/10.1117/12.25998
Event: Eighth International Symposium on Gas-Flow and Chemical Lasers, 1990, Madrid, Spain

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.

Citation Download Citation

Andrei A. Ionin, Andrei A. Kotkov, M. G. Minkovsky, and Dmitrii V. Sinitsyn "Supersonic electron beam controlled discharge CO laser", Proc. SPIE 1397, 8th Intl Symp on Gas Flow and Chemical Lasers, (1 February 1991); https://doi.org/10.1117/12.25998

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