Cooled electron-beam-controlled laser based on two-quantum transitions in CO molecules

Stimulated emission at the first overtone of the CO molecule (λ =2.7–5 μ) was obtained for the first time using the electron-beam-controlled method. When the temperature of the active medium was 100 °K and the specific energy input was 120 J liter ^–1 amagat^–1, the overall efficiency of the CO laser with a selective resonator was ~30% and of this, 3% of the energy was emitted as a result of the two-quantum transitions. The maximum radiation energy in the 2.7–3 μ range was 9 J.