Plasma cathode preionized atmospheric pressure HF chemical laser

Y. Kalisky, K. Waichman, S. Kamin, D. Chuchem

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The performance of an electric discharge, plasma-cathode-preionized, atmospheric-pressure HF chemical laser was investigated and the laser was geometrically optimized. The preionization electron density was measured at atmospheric pressure in helium and in a mixture of SF6 + H2 diluted by helium. The measured preionization density is ne ≈ 6.7 x 109-2 x 1010 cm-3, which is higher than the minimum critical density required for a self-sustained, homogeneous discharge of atmospheric-pressure electronegative gases. We have found improvement in laser specific energy for a diluted gas mixture of SF6 + H2 due to reduction in SF6 concentration. The effects of inter-electrode gap height and plasma cathode grid width on laser performance were also investigated and are reported.

Original languageEnglish
Pages (from-to)59-63
Number of pages5
JournalOptics Communications
Volume137
Issue number1-3
DOIs
StatePublished - 15 Apr 1997
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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