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A new sensor for laser tomography on ELTs

Abstract 139

Submitted by Eric GENDRON


E. Gendron, M. Brangier, G. Chenegros, F. Vidal, Z. Hubert, G. Rousset, F. Pouplard


LESIA, Observatoire de Paris, CNRS, UPMC, Université Paris Diderot; 5, Place Jules Janssen, 92190 Meudon, France


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 a elongated laser spot.

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