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Proceedings Paper

High-frequency folding and optimal phase conjugation for high-contrast adaptive optics
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Paper Abstract

Conventional adaptive optics methods use phase conjugation based on measurements of the phase aberrations at the pupil plane. The measurements are typically done using a Shack-Hartmann sensor sampling at spatial frequencies determined by the spatial frequency limitations of the deformable mirror. The work presented here shows that the nulling needed for high contrast imaging cannot be achieved using such a methodology. Linear combinations of high frequencies in the aberration at the pupil plane "fold" and appear as low frequency aberrations at the image plane. We present an optimized solution for the shape of the deformable mirror based on the Fourier decomposition of the effective phase aberration.

Paper Details

Date Published: 25 October 2004
PDF: 12 pages
Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.551576
Show Author Affiliations
Amir Give'on, Princeton Univ. (United States)
N. Jeremy Kasdin, Princeton Univ. (United States)
Robert J. Vanderbei, Princeton Univ. (United States)
Yoav Avitzour, Princeton Univ. (United States)

Published in SPIE Proceedings Vol. 5490:
Advancements in Adaptive Optics
Domenico Bonaccini Calia; Brent L. Ellerbroek; Roberto Ragazzoni, Editor(s)

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