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Proceedings Paper

Atmospheric scintillations and laser safety
Author(s): Arkadi Zilberman; Ephim Golbraikh; Norman S. Kopeika
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Paper Abstract

Laser devices are currently in widespread use in particular by armed forces for different tasks. Electro-optical sensors as well as unprotected human eyes are extremely sensitive to laser radiation and can be permanently damaged from direct or reflected beams. Laser damage depends on the interaction between the laser beam and the atmosphere in which it traverses. The atmospheric conditions, including the range, terrain features, turbulence, and atmospheric particulates, may alter the laser's effect on different electro-optical devices and systems. When a laser beam passes through the atmosphere the optical turbulence affects the beam. As a result, temporal intensity fluctuations (scintillations) or spatial variations in intensity within a beam cross-section occur. Atmospheric scintillations pose a safety problem because an observer or sensor can be subjected to the risk of a localized irradiance (local focusing effect) much greater than that which would occur in a non-turbulent medium. In the present work, the influence of the atmospheric channel on laser safety is investigated by use of experimental data of laser beam propagation statistics for different atmospheric conditions. The results can be important in the area of laser remote sensing, wireless optical communications, and active imaging.

Paper Details

Date Published: 6 September 2011
PDF: 12 pages
Proc. SPIE 8161, Atmospheric Optics IV: Turbulence and Propagation, 816102 (6 September 2011); doi: 10.1117/12.893386
Show Author Affiliations
Arkadi Zilberman, Ben-Gurion Univ. of the Negev (Israel)
Ephim Golbraikh, Ben-Gurion Univ. of the Negev (Israel)
Norman S. Kopeika, Ben-Gurion Univ. of the Negev (Israel)

Published in SPIE Proceedings Vol. 8161:
Atmospheric Optics IV: Turbulence and Propagation
Alexander M. J. van Eijk; Stephen M. Hammel, Editor(s)

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