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Proceedings Paper

Predictions Of Silicon Avalanche Photodiode Detector Performance In Water Vapor Differential Absorption Lidar
Author(s): R L Kenimer
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Paper Abstract

Performance analyses are presented which establish that over most of the range of signals expected for a down looking differential absorption lidar (DIAL) operated at 16 km the silicon avalanche photodiode (APD) is the preferred detector for DIAL measurements of atmospheric water vapor in the 730 nm spectral region. The higher quantum efficiency of the APD's, (0.8 - 0.9) compared to a photomultiplier's (0.04 - 0.18) more than offsets the higher noise of an APD receiver. In addition to offering lower noise and hence lower random error the APD's excellent linearity and impulse recovery minimize DIAL systematic errors attributable to the detector. Estimates of the effect of detector system parameters on overall random and systematic DIAL errors are presented, and performance predictions are supported by laboratory characterization data for an APD receiver system.

Paper Details

Date Published: 12 April 1988
PDF: 10 pages
Proc. SPIE 0889, Airborne and Spaceborne Lasers for Terrestrial Geophysical Sensing, (12 April 1988); doi: 10.1117/12.944256
Show Author Affiliations
R L Kenimer, ST Systems Corporation (United States)


Published in SPIE Proceedings Vol. 0889:
Airborne and Spaceborne Lasers for Terrestrial Geophysical Sensing
Frank Allario, Editor(s)

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