Abstract

The extinction of a He–Ne laser in a 300-m long urban path has been measured and correlated to temperature and relative humidity variations. The results are contrasted with the scattering coefficient theoretically calculated for a model of aerosols. The agreement seems to indicate that the values of the extinction are strongly correlated with relative humidity in inhomogeneous urban paths.

© 1978 Optical Society of America

Aerosol Extinction Contribution to Atmospheric Attenuation in Infrared Wavelengths

John A. Hodges
Appl. Opt. 11(10) 2304-2310 (1972)

Atmospheric methane measurement instrument using a Zeeman-split He–Ne laser

J. Barry McManus, Paul L. Kebabian, and Charles E. Kolb
Appl. Opt. 28(23) 5016-5023 (1989)

Statistical properties of He–Ne laser radiation reflected through a turbulent atmosphere

D. Bensimon, A. Englander, S. Shtrikman, M. Slatkine, and D. Treves
Appl. Opt. 20(6) 947-950 (1981)

Single-mode collapse in 6328-Å He–Ne lasers

J. B. Ferguson and R. H. Morris
Appl. Opt. 17(18) 2924-2929 (1978)

Extinction Coefficient Measurements on Clear Atmospheres and Thin Cirrus Clouds

A. Guttman
Appl. Opt. 7(12) 2377-2381 (1968)