Efficient far-infared laser lines from CH(2)F(2) pumped by a continuous-wave waveguide CO(2) laser

Quantitative absorption measurements in CH(2)F(2) in the vicinity of 9-microm P-branch CO(2) laser lines made using a 300-MHz tunable-waveguide CO(2) laser gave rise to the observation of six new far-infrared laser lines. The strength of two of these lines is comparable with that of the strongest transitions reported so far in CH(2)F(2). Four of the lines have been assigned to molecular transitions.