Stabilization and effective generation laser on SF6-H2 mixture

M. V. Erofeev, V. M. Orlovskii, V. S. Skakun, E. A. Sosnin, V. 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 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 l 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. 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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsA. Lapucci, M. Ciofini
Pages149-153
Number of pages5
Volume4184
DOIs
Publication statusPublished - 2001
EventXIII International Symposium on Gas Flow and Chemical Lasers - Florence, Italy
Duration: 18 Sep 200022 Sep 2000

Other

OtherXIII International Symposium on Gas Flow and Chemical Lasers
CountryItaly
CityFlorence
Period18.9.0022.9.00

Keywords

  • e-beam and discharge pumping
  • Efficiency of generation
  • HF-laser
  • Spectrum

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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  • Cite this

    Erofeev, M. V., Orlovskii, V. M., Skakun, V. S., Sosnin, E. A., & Tarasenko, V. F. (2001). Stabilization and effective generation laser on SF6-H2 mixture. In A. Lapucci, & M. Ciofini (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4184, pp. 149-153) https://doi.org/10.1117/12.414037