Interferometric analysis of the spatial coherence of a laser beam propagating in seawater and through the wavy air-water interface

Andre Perennou; Jack Cariou; Jean Lotrian

doi:10.1117/12.190086

26 October 1994 Interferometric analysis of the spatial coherence of a laser beam propagating in seawater and through the wavy air-water interface

Andre Perennou, Jack Cariou, Jean Lotrian

Author Affiliations +

Proceedings Volume 2258, Ocean Optics XII; (1994) https://doi.org/10.1117/12.190086
Event: Ocean Optics XII, 1994, Bergen, Norway

Abstract

To study the influence of sea-perturbations on an optical wavefront in coherent detection through the air-sea interface, we have used two experimental methods based on interferometric techniques. We use Michelson interferometry and Fourier transform to determine wavefronts deformations after double passage through a wavy air-water interface. We consider the statistical aspect by using the averaged Fourier spectra over many independent realizations. Then, a spatial coherence analysis of light scattering in turbid water is presented: the module of the degree of spatial coherence across the beam section is measured by a Mach-Zehnder interferometer.

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Andre Perennou, Jack Cariou, and Jean Lotrian "Interferometric analysis of the spatial coherence of a laser beam propagating in seawater and through the wavy air-water interface", Proc. SPIE 2258, Ocean Optics XII, (26 October 1994); https://doi.org/10.1117/12.190086

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