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Optical verification of occulter-based high contrast imaging

Author(s): Sirbu, D; Cady, EJ; Kasdin, NJ; Vanderbei, Robert J.; Lu, J; et al

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Abstract: An external occulter precisely flown in formation with a space telescope has been recently studied as a mission scenario for direct imaging of exoplanets. 10-10 contrast must be attained to permit imaging of the faint reflected light of an Earth-like exoplanet. Here we report on experimental verification of a scaled occulter design that maintains a constant Fresnel number to an equivalent 400 mas space mission in monochromatic light at 632 nm using a diverging beam and an outer mask to suspend the occulter mask. We report contrast in regions of the discovery zone at 4.71 × 10-10 and suppression in the pupil plane of 3.7 × 10-7. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
Publication Date: 15-Sep-2011
Citation: Sirbu, D, Cady, EJ, Kasdin, NJ, Vanderbei, RJ, Lu, J, Kao, E. "Optical verification of occulter-based high contrast imaging" Proceedings of SPIE 8151, Techniques and Instrumentation for Detection of Exoplanets V, August 21, 2011, San Diego, California, 2011. doi:10.1117/12.894213
DOI: doi:10.1117/12.894213
ISSN: 0277-786X
Type of Material: Conference Article
Series/Report no.: Proceedings of SPIE;815114
Journal/Proceeding Title: Techniques and Instrumentation for Detection of Exoplanets V, August 21, 2011, San Diego, California
Version: This is the publisher’s version of the article (version of record). All rights reserved to the publisher. Please refer to the publisher's site for terms of use.

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