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Proceedings Paper

Adaptive optics solutions for turbulence mitigation in different scenarios
Author(s): G. Marchi; C. Scheifling
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Paper Abstract

Several studies on different adaptive optics concepts are presented in the article. Each one of the procedures shows its peculiar advantages when considering different situations where the image distortion, due to atmospheric or artificial turbulence, becomes problematic. A setup is presented based on the usual wavefront reconstruction techniques using a Shack-Hartmann wavefront sensor in a closed loop with a deformable mirror and a computer. The reconstruction method follows the modal approach which has been demonstrated to be more robust and suitable than the zonal one when limited to the correction of the first Zernike components1 . Some results deriving from the studies are reported. A second part in the article describes the measurements and the characteristics of the atmospheric turbulence present in direct tests. Another procedure based on the control of a deformable mirror by mean of a fast iterative procedure is also treated and the relative results about the compensation of laser beams as well as extended images are shown.

Paper Details

Date Published: 6 September 2011
PDF: 13 pages
Proc. SPIE 8161, Atmospheric Optics IV: Turbulence and Propagation, 816104 (6 September 2011); doi: 10.1117/12.892004
Show Author Affiliations
G. Marchi, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)
C. Scheifling, Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung (Germany)

Published in SPIE Proceedings Vol. 8161:
Atmospheric Optics IV: Turbulence and Propagation
Alexander M. J. van Eijk; Stephen M. Hammel, Editor(s)

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