Abstract

Longpath absorption cell measurements were performed by using 24 DF laser lines with 14.3 Torr of HDO-depleted water vapor buffered to 760-Torr pressure by an 80/20 mixture of N₂/O₂ at 23°C The water sample used contained one fiftieth the normal concentration of HDO. The result was a measure of the so-called water-vapor-continuum absorption in the 3.5–4.0-μm spectral region, which is approximately twice previous predictions.

© 1977 Optical Society of America

Water vapor continuum absorption in the 3.5–4.0-μm region

Kenneth O. White, Wendell R. Watkins, Charles W. Bruce, Robert E. Meredith, and Frederick G. Smith
Appl. Opt. 17(17) 2711-2720 (1978)

Pressure dependence of the water vapor continuum absorption in the 3.5–4.0-μm region

Wendell R. Watkins, Kenneth O. White, Lanny R. Bower, and Brian Z. Sojka
Appl. Opt. 18(8) 1149-1160 (1979)

Long-path high-resolution field measurements of absolute transmission in the 3.5- to 4.0-μm atmospheric window

Kenneth M. Haught and James A. Dowling
Opt. Lett. 1(4) 121-123 (1977)

Atmospheric water vapor absorption at 1.3 μm

S. L. Bragg and J. D. Kelley
Appl. Opt. 26(3) 506-513 (1987)

Water-vapor continuum CO₂ laser absorption spectra between 27°C and −10°C

Gary L. Loper, Maureen A. O'Neill, and Jerry A. Gelbwachs
Appl. Opt. 22(23) 3701-3710 (1983)