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Proceedings Paper

Diamond turned high precision PIAA optics and four mirror PIAA system for high contrast imaging of exo-planets
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Paper Abstract

Off-axis, high-sag PIAA optics for high contrast imaging present challenges in manufacturing and testing. With smaller form factors and consequently smaller surface deformations (< 80 microns), diamond turned fabrication of these mirrors becomes feasible. Though such a design reduces the system throughput, it still provides 2λ/D inner working angle. We report on the design, fabrication, measurements, and initial assessment of the novel PIAA optics in a coronagraph testbed. We also describe, for the first time, a four mirror PIAA coronagraph that relaxes apodizer requirements and significantly improves throughput while preserving the low-cost benefits.

Paper Details

Date Published: 15 September 2011
PDF: 9 pages
Proc. SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, 815105 (15 September 2011); doi: 10.1117/12.892849
Show Author Affiliations
Kunjithapatham Balasubramanian, Jet Propulsion Lab. (United States)
Eric Cady, Jet Propulsion Lab. (United States)
Laurent Pueyo, The Johns Hopkins Univ. (United States)
Xin An, Jet Propulsion Lab. (United States)
Stuart Shaklan, Jet Propulsion Lab. (United States)
Olivier Guyon, Steward Observatory, The Univ. of Arizona (United States)
Subaru Telescope, National Astronomical Observatory of Japan (United States)
Ruslan Belikov, NASA Ames Research Ctr. (United States)

Published in SPIE Proceedings Vol. 8151:
Techniques and Instrumentation for Detection of Exoplanets V
Stuart Shaklan, Editor(s)

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