On the efficiency of e-beam and electric discharge pumped SF6-H2 laser

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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 (approximately 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 11%, respectively. E-beam initiated low pressure pulsed discharge for excitation HF molecules leads to increase of radiation energy in 2.8 times.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages22-28
Number of pages7
Volume3931
Publication statusPublished - 2000
Event3rd Conference on Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications - San Jose, CA, USA
Duration: 24 Jan 200025 Jan 2000

Other

Other3rd Conference on Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications
CitySan Jose, CA, USA
Period24.1.0025.1.00

Fingerprint

Electric discharges
electric discharges
Lasers
Fluorine
Gas mixtures
lasers
Laser pulses
HF lasers
Radiation
Pumping (laser)
Molecules
gas mixtures
fluorine
energy
Chemical reactions
output
releasing
radiation
pulses
Gases

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Sosnin, E. A., Erofeev, M. V., Orlovskii, V. M., Skakun, V. S., & Tarasenko, V. F. (2000). On the efficiency of e-beam and electric discharge pumped SF6-H2 laser. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3931, pp. 22-28). Society of Photo-Optical Instrumentation Engineers.

On the efficiency of e-beam and electric discharge pumped SF6-H2 laser. / Sosnin, Edward A.; Erofeev, Michail V.; Orlovskii, Victor M.; Skakun, Victor S.; Tarasenko, Victor F.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3931 Society of Photo-Optical Instrumentation Engineers, 2000. p. 22-28.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sosnin, EA, Erofeev, MV, Orlovskii, VM, Skakun, VS & Tarasenko, VF 2000, On the efficiency of e-beam and electric discharge pumped SF6-H2 laser. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 3931, Society of Photo-Optical Instrumentation Engineers, pp. 22-28, 3rd Conference on Gas, Chemical, and Electrical Lasers and Intense Beam Control and Applications, San Jose, CA, USA, 24.1.00.
Sosnin EA, Erofeev MV, Orlovskii VM, Skakun VS, Tarasenko VF. On the efficiency of e-beam and electric discharge pumped SF6-H2 laser. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3931. Society of Photo-Optical Instrumentation Engineers. 2000. p. 22-28
Sosnin, Edward A. ; Erofeev, Michail V. ; Orlovskii, Victor M. ; Skakun, Victor S. ; Tarasenko, Victor F. / On the efficiency of e-beam and electric discharge pumped SF6-H2 laser. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 3931 Society of Photo-Optical Instrumentation Engineers, 2000. pp. 22-28
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AU - Tarasenko, Victor F.

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AB - 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 (approximately 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 11%, respectively. E-beam initiated low pressure pulsed discharge for excitation HF molecules leads to increase of radiation energy in 2.8 times.

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