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Proceedings Paper

Optimization of a Shack-Hartmann-based wavefront sensor for XAO systems
Author(s): Thierry Fusco; Magalie Nicolle; Gerard Rousset; Vincent Michau; Jean-Luc Beuzit; David Mouillet
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Paper Abstract

Optimization of a Shack-Hartmann based WFS is proposed for XAO systems. Both aliasing effects and noise propagation issues is investigated in order to optimize the WFS device. In particular a new estimator of the spot position is proposed and characterized both analytically and using end-to-end simulations. Analytical expressions of the slope measurement errors is derived and the gain brought by our new Weighted Center of Gravity estimator is quantified.

Paper Details

Date Published: 25 October 2004
PDF: 12 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.549562
Show Author Affiliations
Thierry Fusco, ONERA (France)
Magalie Nicolle, ONERA (France)
Gerard Rousset, ONERA (France)
Vincent Michau, ONERA (France)
Jean-Luc Beuzit, Observatoire de Grenoble (France)
David Mouillet, Observatoire Midi-Pyrenees (France)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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