Fast focal plane wavefront sensing as a second stage adaptive optics wavefront sensor

Benjamin L. Gerard; Jean-Pierre Véran; Garima Singh; Glen Herriot; Olivier Lardière; Christian Marois

doi:10.1117/12.2562861

2 February 2021 Fast focal plane wavefront sensing as a second stage adaptive optics wavefront sensor

Benjamin L. Gerard, Jean-Pierre Véran, Garima Singh, Glen Herriot, Olivier Lardière, Christian Marois

Proceedings Volume 11448, Adaptive Optics Systems VII; 1144826 (2021) https://doi.org/10.1117/12.2562861
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

Focal plane wavefront sensing and control has been identified as a crucial technology to enable high contrast imaging down to terrestrial mass, habitable zone exoplanets with future observatories. However, open questions remain as to how such algorithms should be integrated into existing systems to enable reaching their optimal performance, particularly for ground-based adaptive optics (AO). In this paper we use numerical simulations to show that a focal plane wavefront sensing and control technique running on millisecond timescales, called the Fast Atmospheric Self-coherent camera Technique (FAST), can be designed to operate as a “second stage” AO wavefront sensor (WFS), both for low and high order active wavefront control. Accordingly, we propose a closed-loop real-time controller architecture to use both an AO and FAST WFS to control a common DM.

Conference Presentation

Citation Download Citation

Benjamin L. Gerard, Jean-Pierre Véran, Garima Singh, Glen Herriot, Olivier Lardière, and Christian Marois "Fast focal plane wavefront sensing as a second stage adaptive optics wavefront sensor", Proc. SPIE 11448, Adaptive Optics Systems VII, 1144826 (2 February 2021); https://doi.org/10.1117/12.2562861

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