KGS-3: An electron-beam-pumped gallium antimonide laser

Stimulated emission of λ = 1.6 μ radiation was observed when GaSb was excited by electron-beam bombardment at liquid-nitrogen temperatures. The efficiency of such emission was 30%. A liquid-nitrogen-cooled sealed laser had the following parameters: The electron energy was up to 60 keV; the electron beam density was up to 15 A/cm²; the output radiation power was up to 100 W. The duration of the output pulses could be varied from 2·10^–8 to 2·10^–6 sec. The repetition frequency was up to 10³ Hz. The power, spectral, and spatial characteristics of the output radiation were determined.