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A Laboratory Experiment for Demonstrating Post-Coronagraph Wave Front Sensing and Control for Extreme Adaptive OpticsDirect 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.
Document ID
20090017858
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
Wallace, J. Kent
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Bartos, Randall
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rao, Shanti
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Samuele, Rocco
(Northrop Grumman Corp. Redondo Beach, CA, United States)
Schmidtlin, Edouard
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
August 24, 2013
Publication Date
May 24, 2006
Subject Category
Optics
Meeting Information
Meeting: 2006 SPIE Symposium on Astronomical Telescopes and Instrumentation
Location: Orlando, FL
Country: United States
Start Date: May 24, 2006
End Date: May 31, 2006
Sponsors: International Society for Optical Engineering
Funding Number(s)
CONTRACT_GRANT: NSF-AST-9876783
Distribution Limits
Public
Copyright
Other
Keywords
coronography
planet dectection
wave front sensing
interferometry
nulling

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