Abstract:
Stimulated emission was obtained from mixtures of CO molecules with inert gases (He, Ne, Ar, Kr) expanding supersonically in a planar nozzle 4 cm long (the expansion ratio at the edge of the nozzle was 100). The influence of the nature of the inert gas and of the initial pressure of the mixture on the output power of the stimulated radiation was investigated. The effects observed in the CO gasdynamic laser could be explained by considering the vibration-vibrational (ν–ν) and vibration-translational (ν–T) processes as well as the rotation-translational interaction.