Abstract
The efficiency of a master oscillator—amplifier scheme and the possibility of its using in multichannel nuclear-pumped laser systems are studied. The small-signal gain and saturation parameter are measured for the He:Ar:Xe = 380:380:1 mixture at a pressure of 1 atm at a wavelength of 2.03 μm. It is shown that the small-signal gain increases linearly with the specific pump power density and achieves 1.1—1.2 m-1 at a pump density of 40 W cm-3. The saturation parameter is almost independent of the pump power and is equal to 70—90 W cm-2. It is found that at the pump-pulse maximum (40 W cm-3) the laser radiation power increases after amplification by 100%.
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