Abstract

Efficient room-temperature operation of a fast-axial-flow rf-discharge-excited CO laser is described. A steady-state laser output of 268 W has been obtained with a CO/N2/He/Xe/O2 mixture from a 19-mm-diameter, 300-mm-long discharge. The corresponding electrical conversion efficiency and the specific laser output are as high as 13.5% and 3.15 W/cm3, respectively. The role of Xe in the mixtures is discussed. The specific laser output achieved is comparable with those of the high-power industrial CO2 lasers in which a similar excitation scheme is applied.

© 1994 Optical Society of America

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