Similarity and scaling in diffusion-cooled RF-excited carbon dioxide lasers

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/3.299494· OSTI ID:7175777

Vitruk, P P; Baker, H J; Hall, D R ^[1]

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1. Heriot-Watt Univ., Edinburgh (United Kingdom). Dept. of Physics

The theoretical and experimental study of alpha RF discharges presented in this paper has resulted in the formulation of a set of similarity and scaling laws for diffusion-cooled alpha RF discharge-excited CW waveguide CO[sub 2] lasers. For the first time, the parametric dependencies of the voltage-current-power characteristics of transverse alpha RF discharge have been investigated over a range of excitation frequencies 100--160 MHz, for gas pressures 40--100 torr and for interelectrode distances 1--3 mm in a typical waveguide CO[sub 2] laser gas mixture (He:N[sub 2]CO[sub 2] = 3:1:1 + 5 percent Xe). Relative to dc discharges, the additional scaling law fD = constant is established, and the analysis indicates both high- and low-frequency limits to the operation of practical self-similar laser devices.

• OSTI ID: 7175777
• Journal Information: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Journal of Quantum Electronics (Institute of Electrical and Electronics Engineers); (United States) Vol. 30:7; ISSN 0018-9197; ISSN IEJQA7
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
CARBON DIOXIDE LASERS
ELECTRIC DISCHARGES
ENERGY-LEVEL TRANSITIONS
EXCITATION
GAS LASERS
LASERS
PARAMETRIC ANALYSIS
SCALING LAWS