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

Fingerprint

Stabilization
stabilization
Lasers
HF lasers
lasers
Fluorine
Radiation
Gas mixtures
Laser pulses
energy
Pumping (laser)
Molecules
gas mixtures
fluorine
radiation
Chemical reactions
output
releasing
absorbents
pulses

Keywords

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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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

Stabilization and effective generation laser on SF6-H2 mixture. / Erofeev, M. V.; Orlovskii, V. M.; Skakun, V. S.; Sosnin, E. A.; Tarasenko, V. F.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / A. Lapucci; M. Ciofini. Vol. 4184 2001. p. 149-153.

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

Erofeev, MV, Orlovskii, VM, Skakun, VS, Sosnin, EA & Tarasenko, VF 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, XIII International Symposium on Gas Flow and Chemical Lasers, Florence, Italy, 18.9.00. https://doi.org/10.1117/12.414037
Erofeev MV, Orlovskii VM, Skakun VS, Sosnin EA, Tarasenko VF. Stabilization and effective generation laser on SF6-H2 mixture. In Lapucci A, Ciofini M, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4184. 2001. p. 149-153 https://doi.org/10.1117/12.414037
Erofeev, M. V. ; Orlovskii, V. M. ; Skakun, V. S. ; Sosnin, E. A. ; Tarasenko, V. F. / Stabilization and effective generation laser on SF6-H2 mixture. Proceedings of SPIE - The International Society for Optical Engineering. editor / A. Lapucci ; M. Ciofini. Vol. 4184 2001. pp. 149-153
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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.",
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