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Proceedings Paper

Experimental test of laser beam propagation with simultaneous measurements of turbulence profiles
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Paper Abstract

The experimental study of laser beam propagation in turbulence is relevant to fields such as adaptive optics and optical communications. Turbulence sensing for astronomical purposes requires a convergent laser beam adequately focused on the sodium mesospheric layer. Free Optical communications ground-to-satellite usually are based on divergent laser beams travelling partially through the atmosphere. We present several measurements of the gaussian beam radius for divergent and convergent laser beams propagated in vertical paths. The determinations were carried out at the Teide Observatory (Canary Islands) from the analysis of Rayleigh scattering. The turbulence profile was simultaneously measured with a SCIntillation Detection And Ranging (SCIDAR) instrument. This way, we analyse the influence of the different turbulence layers in the focusing problem through the empirical relation between the beam waist radius and the intensity of the turbulence. We present the experimental set-up, the first results of the experiment and the plans to conduct a statistical study in the future.

Paper Details

Date Published: 6 February 2004
PDF: 10 pages
Proc. SPIE 5237, Optics in Atmospheric Propagation and Adaptive Systems VI, (6 February 2004); doi: 10.1117/12.511563
Show Author Affiliations
Sergio Chueca, Instituto de Astrofisica de Canarias (Spain)
Angel Alonso, Instituto de Astrofisica de Canarias (Spain)
Marcos Reyes, Instituto de Astrofisica de Canarias (Spain)
Jesus J. Fuensalida, Instituto de Astrofisica de Canarias (Spain)
Claudia Hoegmann, Instituto de Astrofisica de Canarias (Spain)
Begona Garcia-Lorenzo, Instituto de Astrofisica de Canarias (Spain)
Esteban G. Mendizabal, Instituto de Astrofisica de Canarias (Spain)
Instituto Nacional de Astrofisica, Optica y Electronica (Mexico)


Published in SPIE Proceedings Vol. 5237:
Optics in Atmospheric Propagation and Adaptive Systems VI
John D. Gonglewski; Karin Stein, Editor(s)

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