12CH3OH and 13CH3OH optically pumped by the 10P and 10HP bands of a pulsed CO2 laser:: New far-infrared laser emissions and assignments

We have re-investigated the (CH3OH)-C-12 and the (CH3OH)-C-13 molecules as optically pumped far-infrared laser sources. We have used our new waveguide pulsed-high-peak-power CO2 laser for pumping, finding 20 new far-infrared laser lines emitted by (CH3OH)-C-12 and seven emitted by (CH3OH)-C-13. For each line we report wavelength, pump offset from the center of the exciting CO2 line, relative polarization, optimum operating pressure and intensity. The LaseRitz program was able to assign one of the new laser systems of (CH3OH)-C-12, involving two new far-infrared laser lines.