Spectral narrowing of an optically pumped high-power D2O laser using the oscillator-amplifier system

Three different factors influence the width of the spectral output from the amplifier of an optically pumped high-power D2O laser system. Narrow spectral outputs of about 10 megahertz width are obtained when the D20 gas pressure is between 6 and 7 Torricelli, the intensity of the laser beam is more than 50 Weber per square centimeter and the oscillation frequency is between 15 and 35 megahertz. The D2O laser system is operated using a configuration with an oscillator-amplifier.