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Efficient wavefront sensing for space-based adaptive optics

Sun, He and Kasdin, N. Jeremy and Vanderbei, Robert (2020) Efficient wavefront sensing for space-based adaptive optics. Journal of Astronomical Telescopes, Instruments, and Systems, 6 (1). Art. No. 019001. ISSN 2329-4124. doi:10.1117/1.jatis.6.1.019001.

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Future large space telescopes will be equipped with adaptive optics (AO) to overcome wavefront aberrations and achieve high contrast for imaging faint astronomical objects, such as Earth-like exoplanets and debris disks. In contrast to AO that is widely used in ground telescopes, space-based AO systems will use focal plane wavefront sensing to measure the wavefront aberrations. Focal plane wavefront sensing is a class of techniques that reconstructs the light field based on multiple focal plane images distorted by deformable mirror (DM) probing perturbations. We report an efficient focal plane wavefront sensing approach for space-based AO that optimizes the DM probing perturbation and thus also the integration time for each image. Simulation of the AO system equipped with a vortex coronagraph has demonstrated that our approach enables efficient information acquisition and significantly reduces the time needed for achieving high contrast in space.

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Additional Information:© 2020 The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI. Paper 19098 received Sep. 16, 2019; accepted for publication Jan. 2, 2020; published online Jan. 20, 2020. This work was performed under contract to National Aeronautics and Space Administration (NASA), Award Number AWD1004730.
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Subject Keywords:adaptive optics; high-contrast imaging; coronagraph; exoplanet; optimal experiment design.
Issue or Number:1
Record Number:CaltechAUTHORS:20200122-153210182
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Official Citation:He Sun, N. Jeremy Kasdin, and Robert Vanderbei "Efficient wavefront sensing for space-based adaptive optics," Journal of Astronomical Telescopes, Instruments, and Systems 6(1), 019001 (20 January 2020).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:100856
Deposited By: Tony Diaz
Deposited On:22 Jan 2020 23:37
Last Modified:16 Nov 2021 17:57

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