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Proceedings Paper

Shaped pupil coronagraphs for planet finding: optimization, manufacturing, and experimental results
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Paper Abstract

Current plans call for the first Terrestrial Planet Finder mission, TPF-C, to be a monolithic space telescope with a coronagraph for achieving high contrast. Our group at Princeton pioneered the concept of shaped pupils for high contrast imaging and planet detection. In previous papers we introduced a number of families of optimal shaped pupils in square, circular, and elliptical apertures. Here, we show our most promising designs and present our laboratory results for the elliptical shaped pupil. We are currently achieving better than 10−7 contrast at 10 λ/D and 10−5 contrast at 4 λ/D, without wavefront control. We describe the deep ion etching manufacturing process to make free standing masks. We also discuss what is limiting contrast in the laboratory and our progress in wavefront correction.

Paper Details

Date Published: 14 September 2005
PDF: 9 pages
Proc. SPIE 5905, Techniques and Instrumentation for Detection of Exoplanets II, 59050G (14 September 2005); doi: 10.1117/12.617768
Show Author Affiliations
N. Jeremy Kasdin, Princeton Univ. (United States)
Ruslan Belikov, Princeton Univ. (United States)
James Beall, National Institute of Standards and Technology (United States)
Robert J. Vanderbei, Princeton Univ. (United States)
Michael G. Littman, Princeton Univ. (United States)
Michael Carr, Princeton Univ. (United States)
Amir Give'on, Princeton Univ. (United States)


Published in SPIE Proceedings Vol. 5905:
Techniques and Instrumentation for Detection of Exoplanets II
Daniel R. Coulter, Editor(s)

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