26 July 2016 Near-infrared wavefront sensing
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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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Peter Wizinowich, Peter Wizinowich, Mark Chun, Mark Chun, Dimitri Mawet, Dimitri Mawet, Guido Agapito, Guido Agapito, Richard Dekany, Richard Dekany, Simone Esposito, Simone Esposito, Thierry Fusco, Thierry Fusco, Olivier Guyon, Olivier Guyon, Donald Hall, Donald Hall, Cedric Plantet, Cedric Plantet, Francois Rigaut, Francois Rigaut, } "Near-infrared wavefront sensing", Proc. SPIE 9909, Adaptive Optics Systems V, 990915 (26 July 2016); doi: 10.1117/12.2233035; https://doi.org/10.1117/12.2233035
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