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Proceedings Paper

Two-camera wavefront estimation with a Gercheberg-Saxton based scheme
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Paper Abstract

Most mature wavefront-estimation algorithms for high-contrast imaging rely on a-priori knowledge of the deformable mirror (DM) surface and thus are limited by uncertainty in the physics of the DM. In this paper, we review the DM diversity wavefront estimation algorithm and introduce a DM-independent method of wavefront estimation that utilizes two cameras and a Gerchberg-Saxton-based iterative phase retrieval scheme. We compare the two estimation algorithms, and we present the creation of a dark hole in the image plane using the Stroke Minimization correction algorithm and this two-camera estimation.

Paper Details

Date Published: 19 August 2009
PDF: 9 pages
Proc. SPIE 7440, Techniques and Instrumentation for Detection of Exoplanets IV, 74400C (19 August 2009); doi: 10.1117/12.826177
Show Author Affiliations
Jason Kay, Princeton Univ. (United States)
Tyler D. Groff, Princeton Univ. (United States)
N. Jeremy Kasdin, Princeton Univ. (United States)

Published in SPIE Proceedings Vol. 7440:
Techniques and Instrumentation for Detection of Exoplanets IV
Stuart B. Shaklan, Editor(s)

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