Analysing the behaviour of partially coherent divergent Gaussian beams propagating through oceanic turbulence

Theoretical study of propagation behaviour of partially coherent divergent Gaussian beams through oceanic turbulence has been performed. Based on the previously developed knowledge of propagation of a partially coherent beam in atmosphere, the spatial power spectrum of the refractive index of ocean...

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Bibliographic Details
Published in:Journal of modern optics 2014-10, Vol.61 (17), p.1430-1441
Main Authors: Yousefi, M., Kashani, F.D., Golmohammady, Sh, Kazemian, E., Ghafary, B.
Format: Article
Language:English
Subjects:
beam width
Beams (radiation)
Coherence
Computational fluid dynamics
cross-spectral density matrix
Density
effective width of spectral degree of coherence
Gaussian beams (optics)
Ion beams
Mathematical analysis
Normal distribution
oceanic turbulence
Oceans
Optics
partially coherent divergent Gaussian beam
Physics
Propagation
Turbulence
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Summary:Theoretical study of propagation behaviour of partially coherent divergent Gaussian beams through oceanic turbulence has been performed. Based on the previously developed knowledge of propagation of a partially coherent beam in atmosphere, the spatial power spectrum of the refractive index of ocean water, extended Huygens-Fresnel principle and the unified theory of coherence and polarization, analytical formulas for cross-spectral density matrix elements are derived. The analytical formulas for intensity distribution, beam width and spectral degree of coherence are determined by using cross-spectral density matrix elements. Then, the effects of some source factors and turbulent ocean parameters on statistical properties of divergent Gaussian beam propagating through turbulent water are analysed. It is found that beam's statistical propagation behaviour is affected by both environmental and source parameters variations.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2014.940016