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Proceedings Paper

Horizontal line of sight turbulence over near-ground paths and implications for adaptive optics corrections in laser communications
Author(s): Bruce Martin Levine; Elizabeth A. Martinsen; Allan Wirth; Andrew J. Jankevics; Manuel Toledo-Quinones; Franklin M. Landers; Theresa L. Bruno
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Paper Abstract

Atmospheric turbulence over long horizontal paths perturbs phase and also can cause severe intensity scintillation in the pupil of an optical communications receiver. This limits the bit error rate over which intensity based modulation schemes can operate. To quantifi the extent ofthe problem, we built a high speed and high resolution wavefront sensor capable of measuring both the amplitude and phase over a horizontal turbulent path. We present resulting measurements of the probability distributions ofboth amplitude and phase as well as Zernike polynomial decomposition ofthe temporal power spectra of phase fluctuations. These results are compared to existing turbulence models, and are used to determine requirements for a wavefront correction scheme using adaptive optics.

Paper Details

Date Published: 23 September 1997
PDF: 12 pages
Proc. SPIE 3125, Propagation and Imaging through the Atmosphere, (23 September 1997); doi: 10.1117/12.283899
Show Author Affiliations
Bruce Martin Levine, Adaptive Optics Associates, Inc. (United States)
Elizabeth A. Martinsen, Adaptive Optics Associates, Inc. (United States)
Allan Wirth, Adaptive Optics Associates, Inc. (United States)
Andrew J. Jankevics, Adaptive Optics Associates, Inc. (United States)
Manuel Toledo-Quinones, Adaptive Optics Associates, Inc. (United States)
Franklin M. Landers, Adaptive Optics Associates, Inc. (United States)
Theresa L. Bruno, Adaptive Optics Associates, Inc. (United States)


Published in SPIE Proceedings Vol. 3125:
Propagation and Imaging through the Atmosphere
Luc R. Bissonnette; Christopher Dainty, Editor(s)

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