M. Schneider et al., FAR-INFRARED CONTINUOUS-WAVE LASER-EMISSION FROM H2O AND FROM NH3 OPTICALLY PUMPED BY A CO LASER, Optics letters, 21(14), 1996, pp. 1038-1039
We report what we believe is the first observation of continuous-wave
far-infrared laser emission from water vapor and from ammonia opticall
y pumped by a CO laser. (C) 1996 Optical Society of America