It is well known that the decomposition of CO2/N2 molecules by excitation discharge and the accumulation of various secondary species in a CO2/N2/He laser mixture are crucial for a high-power closed- cycle TEA CO2 laser. Although many theoretical analyses1 dealing with these kinetic issues have been reported, there have been few theoretical models that could describe both variations of the laser output energy and the laser gas composition as a function of the repetitive pulses of the closed-cycle operation.

© 1990 Optical Society of America

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