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Proceedings Paper

Coherent area inside partially coherent laser beam through atmospheric and sea water turbulences
Author(s): Wei Lu; Liren Liu; De'an Liu; Jianfeng Sun; Aimin Yan
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Paper Abstract

Degree of coherence of partially coherent beam is degraded when it propagates through atmospheric turbulence, remaining a very small coherent area inside the beam. Such small coherent area is not enough for the applications of laser communications and laser radar where a rather large coherent area is necessary for the optical imaging, especially for the heterodyne detection. In this paper, we start from cross-spectral density matrix of partially coherent beam on propagation through turbulence. Ratio of energy degradation is defined to represent the effect of residual coherent area inside the partially coherent laser beam. And we also give the evolvement of the residual coherent area inside partially coherent laser beam through channels involving atmospheric and sea water turbulences, respectively.

Paper Details

Date Published: 19 August 2008
PDF: 11 pages
Proc. SPIE 7091, Free-Space Laser Communications VIII, 70910U (19 August 2008); doi: 10.1117/12.793977
Show Author Affiliations
Wei Lu, Shanghai Institute of Optics and Fine Mechanics (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)
De'an Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Jianfeng Sun, Shanghai Institute of Optics and Fine Mechanics (China)
Aimin Yan, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 7091:
Free-Space Laser Communications VIII
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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