Efficiency of e-beam and electric discharge-pumped SF6-H2 laser

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

doi:10.1117/12.384298

4 May 2000 Efficiency of e-beam and electric discharge-pumped SF₆-H₂ laser

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

Proceedings Volume 3931, Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications; (2000) https://doi.org/10.1117/12.384298
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

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 analyzed. It has been confirmed that the high efficiency 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 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 percent were demonstrated. The optimal gas mixture SF₆: H₂ equals 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 11 percent respectively. E-beam initiated low pressure pulsed discharge for excitation HF molecules leads to increase of radiation energy in 2.8 times.

Citation Download Citation

Edward A. Sosnin, Mikhail V. Erofeev, Victor M. Orlovskii, Victor S. Skakun, and Victor F. Tarasenko "Efficiency of e-beam and electric discharge-pumped SF₆-H₂ laser", Proc. SPIE 3931, Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications, (4 May 2000); https://doi.org/10.1117/12.384298

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KEYWORDS

Fluorine

Molecules

Chemical reactions

Laser energy

Energy efficiency

Pulsed laser operation

Molecular lasers

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