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Proceedings Paper

Atmospheric effects on CO2 differential absorption lidar sensitivity
Author(s): Roger R. Petrin; Douglas H. Nelson; Mark J. Schmitt; Charles Robert Quick Jr.; Joseph J. Tiee; Michael C. Whitehead
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Paper Abstract

The ambient atmosphere between the laser transmitter and the target can affect CO2 differential absorption lidar (DIAL) measurement sensitivity through a number of different processes. In this work, we will address two of the sources of atmospheric interference with CO2 DIAL measurements: effects due to beam propagation through atmospheric turbulence and extinction due to absorption by atmospheric gases. Measurements of atmospheric extinction under different atmospheric conditions are presented and compared to a standard atmospheric transmission model (FASCODE). We have also investigated the effects of atmospheric turbulence on system performance. Measurements of the effective beam size after propagation are compared to model predictions using simultaneous measurements of atmospheric turbulence as input to the model. These results are also discussed in the context of the overall effect of beam propagation through atmospheric turbulence on the sensitivity of DIAL measurements.

Paper Details

Date Published: 29 March 1996
PDF: 12 pages
Proc. SPIE 2702, Gas and Chemical Lasers, (29 March 1996); doi: 10.1117/12.236883
Show Author Affiliations
Roger R. Petrin, Los Alamos National Lab. (United States)
Douglas H. Nelson, Los Alamos National Lab. (United States)
Mark J. Schmitt, Los Alamos National Lab. (United States)
Charles Robert Quick Jr., Los Alamos National Lab. (United States)
Joseph J. Tiee, Los Alamos National Lab. (United States)
Michael C. Whitehead, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 2702:
Gas and Chemical Lasers
Robert C. Sze, Editor(s)

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