We have designed a novel rotational Raman and Rayleigh lidar system that incorporates a simple holographic optical element. The hologram simultaneously disperses and focuses the backscattered signal light so that narrow spectral features can be isolated and detected with high efficiency. By measuring the relative strength of several nitrogen rotational Raman lines, we can obtain an accurate temperature of the atmosphere at a given altitude without the need for external calibration. Simultaneous photon counting of the Rayleigh backscatter signal permits temperature measurements at much higher altitudes.
© 2002 Optical Society of America
(090.2890) Holography : Holographic optical elements
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.3640) Remote sensing and sensors : Lidar
(290.5860) Scattering : Scattering, Raman
(290.5870) Scattering : Scattering, Rayleigh
Geoff Andersen, Jason K. Brasseur, Randall J. Knize, and Paul Haris, "Raman and Rayleigh Holographic Lidar," Appl. Opt. 41, 1798-1804 (2002)