LIFT, a noise-effective low order focal-plane sensor: from theory to full experimental validation

Cédric Plantet; Benoit Neichel; Serge Meimon; Thierry Fusco; Jean-Marc Conan

doi:10.1117/12.926895

13 September 2012 LIFT, a noise-effective low order focal-plane sensor: from theory to full experimental validation

Cédric Plantet, Benoit Neichel, Serge Meimon, Thierry Fusco, Jean-Marc Conan

Proceedings Volume 8447, Adaptive Optics Systems III; 84471O (2012) https://doi.org/10.1117/12.926895
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

Laser Tomographic systems, such as ATLAS, will rely on natural guide stars to sense low order aberrations. 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. We first present a characterization of LIFT’s noise propagation performance and working domain by means of simulations. We then show the results of experiments on ONERA’s test bench for LIFT. These experiments validate the estimation of tip/tilt and focus, in monochromatic light and in large bandwidth (for a spectral resolution of 3), as well as the expected noise propagation. They also confirm the validity of the imaging models used for simulations. Finally, we focus on the preparation of an on-sky validation based on Gemini Multi-conjugate adaptive optics System (GeMS) calibration data at Gemini Southern Observatory.

Citation Download Citation

Cédric Plantet, Benoit Neichel, Serge Meimon, Thierry Fusco, and Jean-Marc Conan "LIFT, a noise-effective low order focal-plane sensor: from theory to full experimental validation", Proc. SPIE 8447, Adaptive Optics Systems III, 84471O (13 September 2012); https://doi.org/10.1117/12.926895

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available