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Proceedings Paper

A laboratory experiment for demonstrating post-coronagraph wavefront sensing and control for extreme adaptive optics
Author(s): J. Kent Wallace; Randall Bartos; Shanti Rao; Rocco Samuele; Edouard Schmidtlin
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Paper 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.

Paper Details

Date Published: 28 June 2006
PDF: 7 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 62722L (28 June 2006); doi: 10.1117/12.672516
Show Author Affiliations
J. Kent Wallace, Jet Propulsion Lab. (United States)
Randall Bartos, Jet Propulsion Lab. (United States)
Shanti Rao, Jet Propulsion Lab. (United States)
Rocco Samuele, Northrop Grumman (United States)
Edouard Schmidtlin, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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