Share Email Print
cover

Proceedings Paper

Laser guide star spot shrinkage for affordable wavefront sensors
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Innovative optical designs allow tackling the spot elongation issues in Shack-Hartman based laser guide star wavefront sensors. We propose two solutions using either a combination of two arrays of freeform microlenses, or a combination of freeform optics, to perform a shrinkage of the laser spots as well as a magnification of the SH focal plane. These approaches will drastically reduce the number of needed pixels, thus making possible the use of existing detectors. We present the recent advances on this activity as well as the estimation of performance, linearity and sensitivity of the compressed system in presence of aberrations.

Paper Details

Date Published: 27 July 2016
PDF: 6 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 99096L (27 July 2016); doi: 10.1117/12.2232367
Show Author Affiliations
Wilfried Jahn, Aix Marseille Univ., CNRS, LAM (France)
Emmanuel Hugot, Aix Marseille Univ., CNRS, LAM (France)
Thierry Fusco, Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
Benoit Neichel, Aix Marseille Univ., CNRS, LAM (France)
Marc Ferrari, Aix Marseille Univ., CNRS, LAM (France)
Carlos Correia, Aix Marseille Univ., CNRS, LAM (France)
Laurent Pueyo, Space Telescope Science Institute (United States)
Kjetil Dohlen, Aix Marseille Univ., CNRS, LAM (France)
Sandrine Pascal, Aix Marseille Univ., CNRS, LAM (France)
Pascal Vola, Aix Marseille Univ., CNRS, LAM (France)
Jean-François Sauvage, Aix Marseille Univ., CNRS, LAM (France)
ONERA (France)
Kacem El Hadi, Aix Marseille Univ., CNRS, LAM (France)
Jean Luc Gach, Aix Marseille Univ., CNRS, LAM (France)


Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

© SPIE. Terms of Use
Back to Top