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Improved high-contrast imaging with on-axis telescopes using a multistage vortex coronagraph

Mawet, Dimitri and Serabyn, Eugene and Wallace, J. Kent and Pueyo, Laurent (2011) Improved high-contrast imaging with on-axis telescopes using a multistage vortex coronagraph. Optics Letters, 36 (8). pp. 1506-1508. ISSN 0146-9592. doi:10.1364/OL.36.001506.

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The vortex coronagraph is one of the most promising coronagraphs for high-contrast imaging because of its simplicity, small inner working angle, high throughput, and clear off-axis discovery space. However, as with most coronagraphs, centrally obscured on-axis telescopes degrade contrast. Based on the remarkable ability of vortex coronagraphs to move light between the interior and exterior of pupils, we propose a method based on multiple vortices, that without sacrificing throughput, reduces the residual light leakage to (a/A)^n, with n≥4, and a and A being the radii of the central obscuration and primary mirror, respectively. This method thus enables high contrasts to be reached even with an on-axis telescope.

Item Type:Article
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URLURL TypeDescription paper
Mawet, Dimitri0000-0002-8895-4735
Pueyo, Laurent0000-0003-3818-408X
Additional Information:© 2011 Optical Society of America. Received December 16, 2010; revised March 3, 2011; accepted March 3, 2011; posted March 22, 2011 (Doc. ID 139775); published April 15, 2011. This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. L. Pueyo acknowledge support from the Carl Sagan Fellowship Program.
Funding AgencyGrant Number
Issue or Number:8
Classification Code:OCIS codes: 070.6110, 110.6770, 350.1260
Record Number:CaltechAUTHORS:20150520-111504686
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57709
Deposited By: Tony Diaz
Deposited On:20 May 2015 18:20
Last Modified:10 Nov 2021 21:54

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