It is shown that the thermal distribution of rotational states within a molecular absorption band of a gas can be probed by means of lidar differential absorption to obtain measurements of the gas temperature. A technique for exploiting this is described; and preliminary calculations indicate that, although relatively weak absorptions are involved, sensitivities should be sufficient for profile measurements of temperature in the atmosphere.
© 1975 Optical Society of America
Original Manuscript: October 19, 1973
Published: January 1, 1975
James B. Mason, "Lidar Measurement of Temperature: a New Approach," Appl. Opt. 14, 76-78 (1975)