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A CW CO/sub 2/ laser with DC-discharge preionization

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3 Author(s)
Crane, K.C.A. ; CSIRO, Lindfield, NSW, Australia ; Browne, P.G. ; Baker, D.E.D.

The application of the plasma-injection technique (involving DC-discharge preionization) to a CW CO/sub 2/ laser operating with recirculated gas is described. Measured characteristics of the discharges, the gain, and the output power are presented. An output of 110 W was obtained with a specific efficiency of 1.0 J/l/sup -1/ of flowed gas at a pressure of 10 kPa. A simplified model to calculate a characteristic length of the main discharge, which is useful for design purposes, is developed. This type of laser may be scaled simply to higher output powers, requires a gas mixture with only 20% He, is compact and robust, and yet is simple in its electrical and mechanical requirements.<>

Published in:

Quantum Electronics, IEEE Journal of  (Volume:25 ,  Issue: 2 )