Absorption coefficient in microwindows of carbon dioxide bands

The theory of the wings of spectral lines is applied to the calculation of the absorption coefficient in the “near” wings of lines — microwindows of transparency of the 1.4- and 4.3-μm bands of CO2 in the case of self-broadening and broadening by N2, He, and Ar. A computational scheme is proposed which permits calculating the absorption coefficient for arbitrary frequency shifts. Satisfactory agreement with the experimental data is obtained.