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RF excitation of a flowing gas CO2 waveguide laser

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2 Author(s)
Khelkhal, M. ; Lab. de Spectroscopie Hertzienne, Univ. des Sci. & Technol. de Lille, France ; Herlemont, F.

Investigation of an RF excited CO2 waveguide laser in flowing gas operation is reported. Power extraction of 0.8 W/cm with an efficiency of 10.3% has been achieved. Using W.W. Rigrod's analysis (1965), values of the small-signal gain α0 and saturation parameter Is have been determined for different excitation levels and for different pressures of the amplifying medium. The parameters α0 and Is, have been determined as 0.6%/cm and 10.4 kW/cm 2, respectively, at 125 torr and 100 W/cm3 RF loading power. These values are close to those reported for sealed-off RF CO2 waveguide lasers with xenon added to the gas mixture

Published in:

Quantum Electronics, IEEE Journal of  (Volume:29 ,  Issue: 3 )