Carbon dioxide lasers -- Evaluation, Lasers
A cw CO₂ laser has been developed in which the active medium is formed by a discharge between coaxial electrodes. The laser gain and saturation properties have been studied as functions of the various device parameters. Over-all efficiency is about the same as for a conventional longitudinal discharge laser, and advantages of the coaxial geometry include low voltage operation, rapid cooling, and rugged construction.
Ken T.-K. Cheng, Lee W. Casperson . Properties of a coaxial cw CO₂ laser. Applied Optics, Volume 18, Number 13 (July 1979), pp. 2130-2135.