Far infrared laser assignments and predictions for CO-stretching and CH3-rocking states of optically pumped 13CH3OH


High-resolution Fourier transform studies of the CO-stretching and CH3-rocking bands of 13CH3OH have beenapplied to the assignment of far-infrared (FIR) laser transitions optically pumped by CO2 infrared (IR) lasers. Theassignments are based on spectroscopic identification of the IR pump transitions at the reported offsets from the CO2laser lines and agreement between the FIR laser wavenumbers and values calculated from IR/FIR combination-looprelations. Wavenumbers are also predicted for further potential new FIR laser lines in transition systems that couldbe pumped by CO2 and ~3CO2 cw and waveguide lasers.