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Proceedings Paper

Laser beam degradation by a tenuous ionized plasma containing a highly localized spatial frequency source
Author(s): Thomas Goldring
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Paper Abstract

Evidence is presented which suggests the existence of turbulent atmospheric beam-propagation environments that are not adequately described by a smooth Kolmogorov cascade. Attention is given to a model which alters the Kolmogorov spectrum for refractive index with a 'bump' at high spatial frequencies, as well as to a method for computing the model's phase spectrum in the case of one transverse dimension. Analytical results indicate that, if the total power in the index spectrum is held constant, the total power in the phase spectrum is reduced by the bump's presence; the power is linearly proportional to the fraction of power not contained in the bump. Reduced scintillation is noted in the beam intensity, together with reduced beam centroids.

Paper Details

Date Published: 1 May 1990
PDF: 12 pages
Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990); doi: 10.1117/12.18361
Show Author Affiliations
Thomas Goldring, W. J. Schafer Associates, Inc. (United States)

Published in SPIE Proceedings Vol. 1221:
Propagation of High-Energy Laser Beams Through the Earth's Atmosphere
Peter B. Ulrich; LeRoy E. Wilson, Editor(s)

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