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A multi-object spectrograph using single-mode fibers with a coronagraph: progress towards laboratory results on the high-contrast testbed for segmented telescopes

Coker, Carl T. and Llop Sayson, Jorge and Shaklan, Stuart and Riggs, A. J. E. and Mawet, Dimitri and Ruane, Garreth and Jovanovic, Nemanja and Echeverri, Daniel (2019) A multi-object spectrograph using single-mode fibers with a coronagraph: progress towards laboratory results on the high-contrast testbed for segmented telescopes. 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. 111171A. ISBN 9781510629271. https://resolver.caltech.edu/CaltechAUTHORS:20190912-134333478

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Abstract

Using single-mode fibers (SMFs) in the image plane of coronagraphs allows access to a new wavefront control regime. By using deformable mirrors to create a mismatch between the incoming starlight and the fiber mode, SMFs can serve as integral parts of the light suppression ability of the coronagraph. Previous promising simulation results show increased spectral bandwidth and throughput when using SMFs in a multi-object role, and previous laboratory results have shown increased light suppression using a single SMF. We present an update on efforts to combine a multi-core SMF with a high-resolution spectrograph on the High Contrast Testbed for Segmented Telescopes (HCST) at Caltech. We present our planned experimental design, as well as simulations of expected performance when controlling multiple fiber cores on HCST. We will test the potential increase in spectral bandpass and throughput resulting from the switch to SMFs, as well as the stability of the wavefront control solution.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2528569DOIArticle
ORCID:
AuthorORCID
Coker, Carl T.0000-0002-9954-7887
Riggs, A. J. E.0000-0002-0863-6228
Mawet, Dimitri0000-0002-8895-4735
Ruane, Garreth0000-0003-4769-1665
Echeverri, Daniel0000-0002-1583-2040
Additional Information:© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was performed at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. This work was supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by the Universities Space Research Association under contract with NASA. Copyright 2019 California Institute of Technology. Government Sponsorship acknowledged. All rights reserved.
Group:Astronomy Department
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
NASA Postdoctoral ProgramUNSPECIFIED
Series Name:Proceedings of SPIE
Issue or Number:11117
Record Number:CaltechAUTHORS:20190912-134333478
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190912-134333478
Official Citation:Carl T. Coker, Jorge Llop Sayson, Stuart Shaklan, A. J. E. Riggs, Dimitri Mawet, Garreth Ruane, Nemanja Jovanovic, and Dan Echeverri "A multi-object spectrograph using single-mode fibers with a coronagraph: progress towards laboratory results on the high-contrast testbed for segmented telescopes", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111171A (9 September 2019); https://doi.org/10.1117/12.2528569
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98616
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Sep 2019 21:57
Last Modified:09 Mar 2020 13:18

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