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Computational model of longitudinal discharge uniformity in RF-excited CO2 slab lasers

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4 Author(s)
J. D. Strohschein ; Dept. of Electr. Eng., Alberta Univ., Edmonton, Alta., Canada ; W. D. Bailida ; H. J. J. Seguin ; C. E. Capjack

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

Published in:

IEEE Journal of Quantum Electronics  (Volume:32 ,  Issue: 8 )