The design and performance of a uv preionized CO2 oscillator capable of 10 atm operation is described. When used as a reinjection oscillator this device is capable of subnanosecond pulses of CO2 radiation with powers in excess of 1 GW.
E. J. McLellan,
"High Pressure Reinjection CO2 Oscillator", Proc. SPIE 0190, Los Alamos Conference on Optics 1979, (13 November 1980); doi: 10.1117/12.957767; https://doi.org/10.1117/12.957767