Pressure and temperature dependence of the self-broadened linewidths of the carbon dioxide laser bands.
The results of laboratory measurements of high-resolution infrared spectra of carbon dioxide in the region near 10 microm at several temperatures and pressures are described. Spectra of the CO(2) laser bands centered at 961 and 1064 cm(-1) were collected at a resolution ofO005 cm(-1) with the gas at temperatures between 50 and 150 degrees C. The self-broadened rotation-vibration line shapes were modeled using a nonlinear least-squares regression technique. Careful attention was given to the problem of base line correction. The temperature exponent of the pressure-broadening coefficient was estimated for thirty lines. The linewidths obtained previously using indirect methods compare well to data obtained in the present investigation.
Gross
L A
LA
Griffiths
P R
PR