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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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  • 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.