title: LIFT: a focal-plane wavefront sensor for real-time low-order sensing on faint sources.
abstract: We propose the linearized focal-plane technique (LIFT) and compare it to classical sensors, such as the quad-cell wavefront sensor (WFS), pyramid WFS, and Shack-Hartmann WFS. The number of modes sensed by LIFT can be tuned without any hardware modification nor degradation of low-order sensing performance. We derive an analytic model of the noise propagation law, which we validate on end-to-end simulations.
authors.affiliation: Office National d'Etudes et de Recherches Aérospatiales, Département d'Optique Théorique et Appliquée, BP 72, F-92322 Châtillon Cedex, France. meimon@onera.fr
authors.forename: Serge
authors.initials: S
authors.lastname: Meimon
authors.forename: Thierry
authors.initials: T
authors.lastname: Fusco
authors.forename: Laurent M
authors.initials: LM
authors.lastname: Mugnier