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The development and applications of a ground-based fiber nulling coronagraph

Martin, Stefan and Serabyn, Eugene and Liewer, Kurt and Loya, Frank and Mennesson, Bertrand and Hanot, Charles and Mawet, Dimitri (2008) The development and applications of a ground-based fiber nulling coronagraph. In: Optical and Infrared Interferometry. Proceedings of SPIE. No.7013. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 70131Y. ISBN 978-0-8194-7223-6.

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A rotating nulling coronagraph has been built for use on ground-based telescopes. The system is based on the concept of sub-aperturing the pupil of the telescope with two elliptical apertures and combining the resulting two input beams on a single-mode fiber. By a relative π phase shift of the beams, the starlight can be nulled and a relatively faint companion star can be detected. Rotation of the aperture mask on the telescope pupil results in a signal similar to that expected from a space-borne telescope system such as the proposed TPF/Darwin interferometer. The design of the nulling coronagraph and the ancillary systems that are needed, such as the fringe tracker, are described and the potential for observations on telescopes such as the Palomar 200" is discussed. Results of a nulling experiment using a single mode fiber as a beam combiner for broadband light between 1.50 μm and 1.80 μm are shown.

Item Type:Book Section
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URLURL TypeDescription DOIArticle
Mennesson, Bertrand0000-0003-4205-4800
Mawet, Dimitri0000-0002-8895-4735
Additional Information:© 2008 SPIE. This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Funding AgencyGrant Number
Subject Keywords:Nulling interferometry, nulling coronagraphy, exo-planets
Series Name:Proceedings of SPIE
Issue or Number:7013
Record Number:CaltechAUTHORS:20150526-103248763
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Official Citation:Stefan Martin ; Eugene Serabyn ; Kurt Liewer ; Frank Loya ; Bertrand Mennesson ; Charles Hanot ; Dimitri Mawet; The development and applications of a ground-based fiber nulling coronagraph. Proc. SPIE 7013, Optical and Infrared Interferometry, 70131Y (July 14, 2008); doi:10.1117/12.789484
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57805
Deposited By: Tony Diaz
Deposited On:27 May 2015 19:08
Last Modified:10 Nov 2021 21:55

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