New far-infrared laser lines from CH/sub 3/OD methanol deuterated isotope

We report on a study of the CH/sub 3/OD molecule in a search for new far-infrared (FIR) laser lines. For optical pumping of large offset vibrational absorption transitions, a continuous-wave waveguide CO/sub 2/ laser with 300 MHz tunability around each line was used for the first time. As a consequence, 17 new far-infrared laser emissions were observed. For these lines, we also present data on wavelength, intensity, offset, relative polarization, and optimum operation pressure.