Experimental validation of LIFT for estimation of low-order modes in low-flux wavefront sensing - ONERA - Office national d'études et de recherches aérospatiales
Article Dans Une Revue Optics Express Année : 2013

Experimental validation of LIFT for estimation of low-order modes in low-flux wavefront sensing

Résumé

Laser Tomographic and Multi-Conjugate Adaptive Optics systems rely on natural guide stars to sense low order aberrations (tip/tilt and focus). LIFT is a novel focal plane wavefront sensor (WFS), performing a maximum likelihood phase retrieval on a single image, with better sensitivity than a 2x2 Hartmann-Shack WFS. Its performance for the estimation of tip/tilt and focus is similar to a pyramid WFS without modulation, but with a simpler set-up. We present here the LIFT concept and associated data processing, as well as experimental results. We validate the estimation of tip/tilt and focus, with monochromatic and large bandwidth light, and verify the low noise sensitivity predicted by theory. (C) 2013 Optical Society of America
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hal-01439441 , version 1 (29-12-2023)

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C. Plantet, S. Meimon, J. -M. Conan, T. Fusco. Experimental validation of LIFT for estimation of low-order modes in low-flux wavefront sensing. Optics Express, 2013, 21 (14), pp.16337--16352. ⟨10.1364/OE.21.016337⟩. ⟨hal-01439441⟩
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