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Proceedings Paper

UV fluorescence lidar detection of bioaerosols
Author(s): Steven D. Christesen; Clifton N. Merrow; Michael Scott DeSha; Anna Wong; Mark W. Wilson; John Charles Butler
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Paper Abstract

A UV fluorescence lidar system for the remote detection of bioaerosols has been built and tested. At the heart of the UV- LIDAR Fluorosensor system are a 200 mJ quadrupled Nd:YAG laser at 266 nm and a 16-inch Cassagrain telescope. Operating on three data collection channels, the UV lidar is capable of real time monitoring of 266 nm elastic backscatter, the total fluorescence between 300 and 400 nm, and the dispersed fluorescence spectrum (using a small spectrograph and gated intensified CCD array). Our goal in this effort was to assess the capabilities of biofluorescence for quantitative detection and discrimination of bioaerosols. To this end, the UV-LIDAR Fluorosensor system was tested against the aerosolized bacterial spore Bacillus subtilus var. niger sp. globiggi (BG) and several likely interferences at several ranges from approximately 600 to 3000 m. Our tests with BG indicate a detection limit of approximately 500 mg/cubic meter at a range of 3000 m.

Paper Details

Date Published: 29 June 1994
PDF: 10 pages
Proc. SPIE 2222, Atmospheric Propagation and Remote Sensing III, (29 June 1994); doi: 10.1117/12.177988
Show Author Affiliations
Steven D. Christesen, U.S. Army Edgewood Research, Development, and Engineering Ctr. (United States)
Clifton N. Merrow, Science and Technology Corp. (United States)
Michael Scott DeSha, U.S. Army Edgewood Research, Development, and Engineering Ctr. (United States)
Anna Wong, U.S. Army Edgewood Research, Development, and Engineering Ctr. (United States)
Mark W. Wilson, Science and Technology Corp. (United States)
John Charles Butler, Science and Technology Corp. (United States)


Published in SPIE Proceedings Vol. 2222:
Atmospheric Propagation and Remote Sensing III
Walter A. Flood; Walter B. Miller, Editor(s)

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