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Near ground measurements of beam shaping and anisotropic turbulence over concrete runway and grass range
Author(s): Melissa Beason; Frank Sanzone; Joseph Coffaro; Christopher Smith; Jonathon Spychalsky; Bruce Berry; Franklin Titus; Robert Crabbs; Larry Andrews; Ronald Phillips
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Paper Abstract

Researchers from the University of Central Florida recently carried out a series of measurements over a concrete runway and a grass range using a 632.8 nm Gaussian beam propagated for 100 or 125 m at a height of 2 m. Mean intensity and scintillation index contours varied significantly throughout these measurements in ways that corresponded to more than simple isotropy or anisotropy of optical turbulence. A simple theory is developed to show the effect of a nonlinear index of refraction gradient in addition to the possibility of anisotropic turbulence. Theoretical contours are compared to experimental results which seem to indicate the presence of a beam shaping phenomena near the ground in addition to anisotropy.

Paper Details

Date Published: 18 September 2018
PDF: 12 pages
Proc. SPIE 10770, Laser Communication and Propagation through the Atmosphere and Oceans VII, 107700L (18 September 2018); doi: 10.1117/12.2323317
Show Author Affiliations
Melissa Beason, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Frank Sanzone, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Joseph Coffaro, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Christopher Smith, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Jonathon Spychalsky, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Bruce Berry, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Franklin Titus, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Robert Crabbs, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Larry Andrews, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Ronald Phillips, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 10770:
Laser Communication and Propagation through the Atmosphere and Oceans VII
Jeremy P. Bos; Alexander M. J. van Eijk; Stephen Hammel, Editor(s)

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