Similarity and scaling in diffusion-cooled RF-excited carbon dioxide lasers
- 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), Vol. 30:7; ISSN 0018-9197
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characteristics of a transverse-flow CO laser excited by RF-discharge
Efficient 30-W, 140-MHz rf amplifier for cw CO/sub 2/ waveguide laser excitation