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Conferences > RPA > 1983 > TuC > TuC13

Measurement of Gases Using CW Lasers, Differential Absorption, and Topographic Targets

William B. Grant and Christopher R. Webster

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Abstract

In this paper the specifications and measurement results of three CW laser systems which employ the Differential Absorption Lidar (DIAL) technique1, will be discussed: a helium neon (HeNe) laser system operating at 3.39 μm for the detection of CH4; a CO2 laser system operating at 9.5 μm using direct- or coherent- (heterodyne or modified homodyne) detection of ozone. The third system uses a tunable diode laser (TDL) system for detection of NO2 by scanning over an absorption line in the 6.2-μm band.

© 1983 Optical Society of America

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