The design, construction, and operational characteristics of an arc driven supersonic cw HF chemical laser of more than 1 kW power, which has been developed for laser-material investigations, are presented. Overtone lasing has also been obtained with a power of 220 W. The overtone chemical laser uses the same chemical reaction and produces the same excited populations as the conventional hydrogen fluoride laser does. It differs insofar as the optics employed suppress the lasing at 2.8 micrometers and allow lasing at 1.3 micrometers .
Rene C. Joeckle,
"Arc driven supersonic cw HF chemical laser", Proc. SPIE 1810, 9th International Symposium on Gas Flow and Chemical Lasers, (4 May 1993); doi: 10.1117/12.144650; https://doi.org/10.1117/12.144650