(12CO2+ 13CO2+ 14N2O+ 15N 14NO)-active media of high pressure with optical pumping by HF laser radiation

M. A. Azarov; B. S. Alexandrov; A. V. Arsenjev; A. P. Burtsev; V. A. Drozdov; V. V. Kalinovsky; V. I. Mashendzhinov; G. M. Mishchenko; G. A. Troshchinenko

doi:10.1117/12.739075

26 April 2007 (¹²CO₂+ ¹³CO₂+ ¹⁴N₂O+ ¹⁵N ¹⁴NO)-active media of high pressure with optical pumping by HF laser radiation

M. A. Azarov, B. S. Alexandrov, A. V. Arsenjev, A. P. Burtsev, V. A. Drozdov, V. V. Kalinovsky, V. I. Mashendzhinov, G. M. Mishchenko, G. A. Troshchinenko

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Proceedings Volume 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 63462B (2007) https://doi.org/10.1117/12.739075
Event: XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2006, Gmunden, Austria

Abstract

Numerical and experimental study of processes of absorption of pumping radiation of HF-laser, a laser oscillation and a radiation amplification in a (CO₂+N₂O) active medium of high pressure is carried out. Measurements and numerical estimation of an absorption coefficient for 21 spectral lines of the HF-laser radiation, which are strongly absorbed by the CO₂ and N₂O molecules, are performed. Measurements of an integral absorption coefficient for total pumping spectrum for the laser media of various content are carried out. About 63 and 35 % of radiation of the non-chain and chain chemical HF-laser, respectively, are absorbed using a four-component laser mixture. For the mono-component active media the maximum specific energy of an output radiation in 10 microns region, efficiency of an energy conversion and a small signal gain (¹²CO₂ - 200 J/l, 18 %, 9 m^-1 ; ¹⁴N₂O - 100 J/l, 7 %, 6 m^-1) are obtained. For two-component (¹²CO₂+¹⁴N₂O)-active media these parameters are 120 J/l, 7%, 7 m^-1 at maximum laser energy 12 J. According to the numerical estimation, a coefficient of conversion of energy accumulated in lasing mode to energy of a pico-second pulse in 10.6 micron region for mixture of the CO₂ and N₂O molecules may achieve 30 %.

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M. A. Azarov, B. S. Alexandrov, A. V. Arsenjev, A. P. Burtsev, V. A. Drozdov, V. V. Kalinovsky, V. I. Mashendzhinov, G. M. Mishchenko, and G. A. Troshchinenko "(¹²CO₂+ ¹³CO₂+ ¹⁴N₂O+ ¹⁵N ¹⁴NO)-active media of high pressure with optical pumping by HF laser radiation", Proc. SPIE 6346, XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 63462B (26 April 2007); https://doi.org/10.1117/12.739075

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KEYWORDS

Carbon monoxide

Gas lasers

Absorption

Optical pumping

Molecules

Energy efficiency

Laser energy

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