@inproceedings{168f47acc1d8472ead6226cdc3f0c001,
title = "Visible extreme adaptive optics for GMagAO-X with the triple-stage AO architecture (TSAO)",
abstract = "The Extremely Large Telescopes will require hundreds of actuators across the pupil for high Strehl in the visible. We envision a triple-stage AO (TSAO) system for GMT/GMagAO-X to achieve this. The first stage is a 4K DM controlled by an IR pyramid wavefront sensor that provides the first order c orrection. The second stage contains the high-order parallel DM of GMagAO-X that has 21000 actuators and contains an interferometric delay line for phasing of each mirror segment. This stage uses a Zernike wavefront sensor for high-order modes and a Holographic Dispersed Fringe Sensor for segment piston control. Finally, the third stage uses a dedicated 3K dm for non-common path aberration control and the coronagraphic wavefront control by using focal plane wavefront sensing and control. The triple stage architecture has been chosen to create simpler decoupled control loops. This work describes the performance of the proposed triple-stage AO architecture for ExAO with GMagAO-X.",
keywords = "Adaptive optics, Exoplanets, Giant Magellan Telescope, Wavefront control, Wavefront sensing, coronagraphy",
author = "Haffert, {Sebastiaan Y.} and Males, {Jared R.} and Close, {Laird M.} and Olivier Guyon and Alexander Hedglen and Maggie Kautz",
note = "Publisher Copyright: {\textcopyright} 2022 SPIE.; Adaptive Optics Systems VIII 2022 ; Conference date: 17-07-2022 Through 22-07-2022",
year = "2022",
doi = "10.1117/12.2630222",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Laura Schreiber and Dirk Schmidt and Elise Vernet",
booktitle = "Adaptive Optics Systems VIII",
}