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Title: A laboratory experiment for demonstrating post-coronagraph wave front sensing and control for extreme adaptive optics
Authors: Wallace, J. Kent
Bartos, Randall
Rao, Shanti
Samuele, Rocco
Schmidtlin, Edouard
Keywords: planet dectection
wave front sensing
Issue Date: 24-May-2006
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2006.
Citation: Astronomical Telescopes and Instrumentation, Orlando, Florida, May 24-31, 2006.
Abstract: Direct detection of exo-planets from the ground will become a reality with the advent of a new class of extreme-adaptive optics instruments that will come on-line within the next few years. In particular, the Gemini Observatory will be developing the Gemini Planet Imager (GPI) that will be used to make direct observations of young exo-planets. One major technical challenge in reaching the requisite high contrast at small angles is the sensing and control of residual wave front errors after the starlight suppression system. This paper will discuss the nature of this problem, and our approach to the sensing and control task. We will describe a laboratory experiment whose purpose is to provide a means of validating our sensing techniques and control algorithms. The experimental demonstration of sensing and control will be described. Finally, we will comment on the applicability of this technique to other similar high-contrast instruments
Appears in Collections:JPL TRS 1992+

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