All Physics Faculty Publications
High-Resolution Spectra of Atmospheric Water Vaporin the Near-IR using a Raman-Shifted Alexandrite Laser
Document Type
Contribution to Book
Journal/Book Title/Conference
Lidar Remote Sensing for Industry and Environment Monitoring II
Volume
4484
Publication Date
2002
First Page
103
Last Page
111
Abstract
We have developed a pulsed, narrow line Raman shifted alexandrite laser to produce tunable near-IR radiation in the 1140 nm absorption band of water vapor. With the first Stokes Raman conversion in hydrogen, the full tuning range of alexandrite, 730-790 nm, can potentially cover the wavelength range 1050 1200 nm. The application to differential absorption lidar, DIAL, is the vertical profiling of humidity and temperature in the atmosphere. This paper reports the application of Raman-shifted alexandrite radiation for new quantitative measurements of the strengths and widths of water vapor absorption lines between 8865 and 8915 cm-1. Alexandrite wavelength determination was obtained with oxygen A-band rotational lines near 765 nm. Similar applications and studies of the water vapor band near 940 nm can be readily carried out by Raman-shifting in deuterium.
Recommended Citation
Hammond, M.R., T.D. Wilkerson, and V.B. Wickwar, High-resolution spectra of atmospheric water vapor in the near-IR using a Raman-shifted alexandrite laser, in Lidar Remote Sensing for Industry and Environment Monitoring II, edited by U.N. Singh, pp. 103–111, Proceedings of SPIE, 4484, 2002.
