Title :
Computational model of longitudinal discharge uniformity in RF-excited CO2 slab lasers
Author :
Strohschein, James D. ; Bailida, W.D. ; Seguin, H.J.J. ; Capjack, Clarence E.
Author_Institution :
Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada
fDate :
8/1/1996 12:00:00 AM
Abstract :
A computational model is used to predict longitudinal excitation uniformity in large-area electrodes for RF-excited CO2 lasers. Effects of nonuniform discharge loading along the electrode transmission line are accounted for in the model, as is the dependence of discharge properties on power loading, excitation frequency, gas pressure, and electrode geometry. Predictions of excitation uniformity are tested against measurements of discharge luminosity. Good agreement is demonstrated. Since the model is valid over the range of discharge conditions interesting to slab CO2 lasers, it should applicable to the problem of slab electrode optimization
Keywords :
carbon compounds; electrodes; excited states; gas lasers; high-frequency discharges; laser theory; modelling; optimisation; transmission line theory; CO2; CO2 slab lasers; RF-excited; computational model; discharge conditions; discharge luminosity; discharge properties; electrode geometry; electrode transmission line; excitation frequency; excitation uniformity; gas pressure; large-area electrodes; longitudinal discharge uniformity; longitudinal excitation uniformity; nonuniform discharge loading; power loading; slab electrode optimization; Computational modeling; Electrodes; Frequency; Gas lasers; Laser excitation; Laser modes; Power transmission lines; Predictive models; Slabs; Solid modeling;
Journal_Title :
Quantum Electronics, IEEE Journal of
