Optoacoustic Spectroscopy and FIR Laser Action on CH3Br using a Waveguide CO2 Laser

Abstract

The optoacoustic spectrum of CH3Br around 10 μm band lines of a tunable cw waveguide CO2 laser is investigated. Several new infrared absorptions are observed and most of the corresponding molecular transitions are assigned. Far infrared laser action is reported by pumping with the same CO2 laser: pump offsets are given using the Transferred Lamb Dip (TLD) technique. A new FIR laser emission at 265.8±1 μm is obtained by pumping with the 10-R(20) CO2 line and assigned.