Water vapor absorption at 161 wavelengths, from 9.2 to 11.9 μm, of the 12C16O2, 13C16O2, and 14C16O2 lasers was measured using a resonant optoacoustic spectrometer. Results were obtained at several precisely determined vapor concentrations in a flow of pure air at a total pressure of 1 atm. Since the same apparatus and methodology were used for all measurements, a reliable assessment can be made of the relative merits of the three lasers in applications such as atmospheric propagation and ranging.
© 1983 Optical Society of America
Original Manuscript: September 3, 1982
Published: March 1, 1983
J. S. Ryan, M. H. Hubert, and R. A. Crane, "Water vapor absorption at isotopic CO2 laser wavelengths," Appl. Opt. 22, 711-717 (1983)