Stabilization and effective generation laser on SF6-H2 mixture

Mikhail V. Erofeev; Victor M. Orlovskii; Victor S. Skakun; Edward A. Sosnin; Victor F. Tarasenko

doi:10.1117/12.414037

25 January 2001 Stabilization and effective generation laser on SF₆-H₂ mixture

Mikhail V. Erofeev, Victor M. Orlovskii, Victor S. Skakun, Edward A. Sosnin, Victor F. Tarasenko

Proceedings Volume 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (2001) https://doi.org/10.1117/12.414037
Event: XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 2000, Florence, Italy

Abstract

Energy, temporal and spectral characteristics of HF-laser pumped by non-chain chemical reaction initiated by radially converging e-beam, planar e-beam and non-self-sustained discharge have been investigated. The major channels of vibrationally excited HF molecules formation have been analysed. It has been confirmed that the high efficiency (~ 10 %) of non-chain HF laser can be reached only by simultaneous atomic and molecular fluorine formation under the action of e-beam and molecular fluorine participation in the inversion releasing process. It is shown that the laser pulse has a complex spectral-temporal structure caused by consecutive generation of the P-lines P2?P1?P3?P4?P5?P6 and overlapping of the rotary lines of the same oscillatory band and separate oscillatory lines during a pulse of radiation. With e-beam pumping of a 30 1 active volume laser, the output energy as high as 115 J and efficiency with respect to e-beam energy deposited into gas mixture up to 8 % were demonstrated. The optimal gas mixture SF6 : H2 =8 : 1 under pressure of 0.45 atm has been obtained. At pressure 1 .1 atm and non-uniform output distribution, total laser energy and efficiency with respect to e-beam energy deposited into gas were found to be up to 200 J and 1 1 %, respectively. Use of e-beam initiated low pressure pulsed discharge for excitation HF molecules leads to increase of radiation energy in 2.8 times. Also investigations on zeolite-based different absorbents influence on energy stability of HF-laser are presented and radiation energy decay after 103 shoots not more than 15-20 % is gained.

Citation Download Citation

Mikhail V. Erofeev, Victor M. Orlovskii, Victor S. Skakun, Edward A. Sosnin, and Victor F. Tarasenko "Stabilization and effective generation laser on SF₆-H₂ mixture", Proc. SPIE 4184, XIII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (25 January 2001); https://doi.org/10.1117/12.414037

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KEYWORDS

Molecules

Fluorine

Chemical reactions

Hydrogen fluoride lasers

Molecular lasers

Energy efficiency

Laser energy

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