Near-infrared wavefront sensing
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Wizinowich, Peter
Chun, Mark
Mawet, Dimitri
Agapito, Guido
Dekany, Richard G
Esposito, Simone
Fusco, Thierry
Guyon, Olivier
Hall, Donald
Plantet, Cedric
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SPIE - The International Society for Optical Engineering
Abstract
We discuss the advantages of wavefront sensing at near-infrared (IR) wavelengths with low-noise detector technologies that have recently become available. In this paper, we consider low order sensing with laser guide star (LGS) adaptive optics (AO) and high order sensing with natural guide star (NGS) AO. We then turn to the application of near-IR sensing with the W. M. Keck Observatory (WMKO) AO systems for science and as a demonstrator for similar systems on extremely large telescopes (ELTs). These demonstrations are based upon an LGS AO near-IR tip-tilt-focus sensor and our collaboration to implement a near-IR pyramid wavefront sensor (PWFS) for a NGS AO L-band coronagraphic imaging survey to identify exoplanet candidates.
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Proceedings of SPIE Volume 9909: The International Society for Optical Engineering
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Open Access
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