A new sensor for laser tomography on ELTs
LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot,
5, Place Jules Janssen, 92190
a e-mail: eric.gendron at obspm.fr
We present a new concept for an optical differentiation wavefront sensor, featuring a high number of phase measurements across the pupil, with a linear response versus the phase gradient. We show measurements with this sensor, obtained though turbulence on elongated laser spots.
© Owned by the authors, published by EDP Sciences, 2010