Abstract

Freon-12 absorption coefficients for the P(22) through P(48) CO2 waveguide laser transitions of the 00°1– (10°0, 02°0)I band are presented. For pressures below 10 Torr and a spectral resolution of 0.1 MHz, the absorption coefficients show considerable spectral structure within ±250 MHz of the CO2 laser line center; but individual absorption lines are only resolved for pressures below 100 μm. The absorption coefficients around the CO2 waveguide laser lines are shown to be spectrally structureless as well as pressure independent above 20 Torr. The temperature dependence of the absorption coefficients are presented for the first time, and they are shown to be linearly dependent on temperature.

© 1978 Optical Society of America

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