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The vortex fiber nulling mode of the Keck Planet Imager and Characterizer (KPIC)

Echeverri, Daniel and Ruane, Garreth and Jovanovic, Nemanja and Hayama, Thomas and Delorme, Jacques-Robert and Pezzato, Jacklyn and Bond, Charlotte Z. and Wang, Jason and Mawet, Dimitri and Wallace, J. Kent and Serabyn, Eugene (2019) The vortex fiber nulling mode of the Keck Planet Imager and Characterizer (KPIC). In: Techniques and Instrumentation for Detection of Exoplanets IX. Proceedings of SPIE. No.11117. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 111170V. ISBN 9781510629271.

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The Keck Planet Imager and Characterizer (KPIC) is an upgrade to the Keck II adaptive optics system that includes an active fiber injection unit (FIU) for efficiently routing light from exoplanets to NIRSPEC, a high-resolution spectrograph. Towards the end of 2019, we will add a suite of new coronagraph modes as well as a high-order deformable mirror. One of these modes, operating in K-band (2.2 µm), will be the first vortex fiber nuller to go on sky. Vortex Fiber Nulling (VFN) is a new interferometric method for suppressing starlight in order to spectroscopically characterize exoplanets at angular separations that are inaccessible with conventional coronagraph systems. A monochromatic starlight suppression of 6 x 10^(-5) in 635 nm laser light has already been demonstrated on a VFN testbed in the lab. A polychromatic experiment is now underway and coupling efficiencies of < 5 x 10^(-4) and ~5% have been demonstrated for the star and planet respectively in 10% bandwidth light. Here we describe those experiments, the new KPIC VFN mode, and the expected performance of this mode using realistic parameters determined from on-sky tests done during the KPIC commissioning.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Echeverri, Daniel0000-0002-1583-2040
Ruane, Garreth0000-0003-4769-1665
Jovanovic, Nemanja0000-0001-5213-6207
Wang, Jason0000-0003-0774-6502
Mawet, Dimitri0000-0002-8895-4735
Wallace, J. Kent0000-0001-5299-6899
Additional Information:© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration (NASA).
Group:Astronomy Department
Funding AgencyGrant Number
Subject Keywords:Instrumentation, exoplanets, nulling interferometry
Series Name:Proceedings of SPIE
Issue or Number:11117
Record Number:CaltechAUTHORS:20190912-141939947
Persistent URL:
Official Citation:Daniel Echeverri, Garreth Ruane, Nemanja Jovanovic, Thomas Hayama, Jacques-Robert Delorme, Jacklyn Pezzato, Charlotte Bond, Jason Wang, Dimitri Mawet, J. Kent Wallace, and Eugene Serabyn "The vortex fiber nulling mode of the Keck Planet Imager and Characterizer (KPIC)", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111170V (9 September 2019);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98621
Deposited By: Tony Diaz
Deposited On:12 Sep 2019 21:45
Last Modified:16 Dec 2020 18:56

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