25 October 2004 Optimization of a Shack-Hartmann-based wavefront sensor for XAO systems
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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.
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Thierry Fusco, Magalie Nicolle, Gerard Rousset, Vincent Michau, Jean-Luc Beuzit, David Mouillet, "Optimization of a Shack-Hartmann-based wavefront sensor for XAO systems", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.549562; https://doi.org/10.1117/12.549562
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