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Proceedings Paper

Speckle Propagation Through Turbulence: Its Characteristics And Effects
Author(s): J. Fred Holmes
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Paper Abstract

Atmospheric turbulence and target induced speckle can have a significant and deleterious effect on the performance of optical systems. The primary effect is to introduce a strong fluctuation in the intensity and a random perturbation of the phase of the fields at the optical receiver. This is equivalent to introducing a large noise source at the receiver; and consequently multiple samples and/or clever processing techniques are needed to accurately estimate the magnitude of the received intensity. In addition, for coherent detection schemes, the random phase and finite transverse coherence length introduced by the speckle and turbulence will limit the size of aperture that can be used. These characteristics of the speckle field after propagation through turbulence and its effect on optical systems will be discussed in a tutorial overview. In addition, recent advances in understanding and characterizing this phenomena will be presented.

Paper Details

Date Published: 12 July 1983
PDF: 9 pages
Proc. SPIE 0410, Laser Beam Propagation in the Atmosphere, (12 July 1983); doi: 10.1117/12.935759
Show Author Affiliations
J. Fred Holmes, Oregon Graduate Center (United States)

Published in SPIE Proceedings Vol. 0410:
Laser Beam Propagation in the Atmosphere
John Carl Leader, Editor(s)

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