Electrical properties of narrow-gap slab rf discharges in a high-pressure fast-axial-flow CO2 laser

Gavin A. J. Markillie; Howard J. Baker; J. G. Betterton; Denis R. Hall

doi:10.1117/12.334422

22 December 1998 Electrical properties of narrow-gap slab rf discharges in a high-pressure fast-axial-flow CO₂ laser

Gavin A. J. Markillie, Howard J. Baker, J. G. Betterton, Denis R. Hall

Proceedings Volume 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference; (1998) https://doi.org/10.1117/12.334422
Event: Twelfth International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, 1998, St. Petersburg, Russian Federation

Abstract

High pressure operation of a fast-axial-flow CO₂ laser, with a rectangular cross-section RF slab discharge is demonstrated in both cw and pulsed modes. Spatially resolved measurements of discharge power densities give good agrement with total input powers while calculated values of sheath thickness correspond with visual observations of the gas discharge. Variations in power density and sheath thickness along the gas flow axis are interpreted in terms of pressure gradients and gas flow choking within the discharge.

Citation Download Citation

Gavin A. J. Markillie, Howard J. Baker, J. G. Betterton, and Denis R. Hall "Electrical properties of narrow-gap slab rf discharges in a high-pressure fast-axial-flow CO₂ laser", Proc. SPIE 3574, XII International Symposium on Gas Flow and Chemical Lasers and High-Power Laser Conference, (22 December 1998); https://doi.org/10.1117/12.334422

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