Small signal gain time behavior on high vibrational transitions (V>15) of pulsed CO laser amplifier

Andrei A. Ionin; Yurii M. Klimachev; Andrei A. Kotkov; Dmitrii V. Sinitsyn; Leonid V. Seleznev; S. Vetoshkin; A. Yu. Kozlov; O. Rulev; Anatolii P. Napartovich; Alexander K. Kurnosov; Sergei Shnyrev

doi:10.1117/12.558217

16 June 2004 Small signal gain time behavior on high vibrational transitions (V>15) of pulsed CO laser amplifier

Andrei A. Ionin, Yurii M. Klimachev, Andrei A. Kotkov, Dmitrii V. Sinitsyn, Leonid V. Seleznev, S. Vetoshkin, A. Yu. Kozlov, O. Rulev, Anatolii P. Napartovich, Alexander K. Kurnosov, Sergei Shnyrev

Author Affiliations +

Proceedings Volume 5479, Laser Optics 2003: High-Power Gas Lasers; (2004) https://doi.org/10.1117/12.558217
Event: Laser Optics 2003, 2003, St. Petersburg, Russian Federation

Abstract

Small-signal gain time behavior for a pulsed e-beam sustained discharge CO laser amplifier operating on fundamental band vibrational transitions V → V-1 from 6 → 5 (λ ~ 5.0 μm) up to 32 → 31 (λ~7.5 μm) was studied both experimentally and theoretically at various parameters of active medium. Special attention was paid to the small-signal gain time behavior on high vibrational transitions (V > 15). As was previously shown by us, multi-quantum theoretical model of vibrational exchange has to be applied for a correct description of a CO laser operating on vibrational transitions V → V-1 with V higher than 15 instead of a single-quantum one. To make easier theoretical interpretation of the experimental results, the binary nitrogen free gas mixture CO:He = 1:4 was used in our experiments. Total gas density and initial gas temperature was 0.12 Amagat and ~100 K, respectively. The complete kinetic model of a CO laser taking into account multi-qauntum vibrational exchange was employed for theoretical description of the small-signal gain time behavior. The theoretical results were compared with the experimental data.

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Andrei A. Ionin, Yurii M. Klimachev, Andrei A. Kotkov, Dmitrii V. Sinitsyn, Leonid V. Seleznev, S. Vetoshkin, A. Yu. Kozlov, O. Rulev, Anatolii P. Napartovich, Alexander K. Kurnosov, and Sergei Shnyrev "Small signal gain time behavior on high vibrational transitions (V>15) of pulsed CO laser amplifier", Proc. SPIE 5479, Laser Optics 2003: High-Power Gas Lasers, (16 June 2004); https://doi.org/10.1117/12.558217

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KEYWORDS

Gas lasers

Carbon monoxide

Mirrors

Continuous wave operation

Molybdenum

Time metrology

Amplifiers

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