Title :
Methanol and the optically pumped far-infrared laser
Author :
Xu, Li-Hong ; Lees, Ronald M. ; Vasconcellos, Elza C C ; Zerbetto, Sandra C. ; Zink, Lyndon R. ; Evenson, Kenneth M.
Author_Institution :
Dept. of Phys. Sci., New Brunswick Univ., Saint John, NB, Canada
fDate :
3/1/1996 12:00:00 AM
Abstract :
New results on the generation and spectroscopic analysis of optically pumped far-infrared (FIR) laser emission from CH3OH have been obtained as part of a systematic study of methanol isotopomers as FIR laser sources utilizing the extended line coverage available from a recently developed high-resolution CO2 laser of high efficiency. For normal CH3OH, six new short-wavelength lines have been found using a 2 m long Fabry-Perot FIR laser cavity. Accurate heterodyne frequency measurements are reported for 14 CH3OH FIR laser lines, nearly all above 100 cm-1, as well as accurate frequency offsets for most of the corresponding CO2 pump lines. Spectroscopic assignments are presented for nine high-frequency FIR laser lines in four pump systems
Keywords :
Fabry-Perot resonators; frequency measurement; gas lasers; isotope effects; laser beams; laser cavity resonators; laser variables measurement; optical pumping; organic compounds; 100 cm-1; 2 m; CO2; CO2 laser; FIR laser lines; FIR laser sources; Fabry-Perot FIR laser cavity; extended line coverage; frequency offsets; heterodyne frequency measurements; isotopomers; laser emission; methanol; optically pumped far-infrared laser; pump lines; pump systems; short-wavelength lines; spectroscopic assignments; Fabry-Perot; Finite impulse response filter; Frequency measurement; Laser excitation; Methanol; Optical mixing; Optical pumping; Pump lasers; Spectroscopy; Stimulated emission;
Journal_Title :
Quantum Electronics, IEEE Journal of
