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The high-contrast spectroscopy testbed for segmented telescopes (HCST): new wavefront control demonstrations

Llop-Sayson, Jorge and Ruane, Garreth and Jovanovic, Nemanja and Mawet, Dimitri and Echeverri, Daniel and Riggs, A. J. Eldorado and Coker, Carl T. and Morrissey, Grady and Sun, He (2019) The high-contrast spectroscopy testbed for segmented telescopes (HCST): new wavefront control demonstrations. 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. 111171W. ISBN 9781510629271. https://resolver.caltech.edu/CaltechAUTHORS:20190912-141317978

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Abstract

The High-Contrast Spectroscopy Testbed for Segmented Telescopes (HCST) in the Exoplanet Technology Laboratory (ET Lab) at Caltech is designed to test the technologies that will enable direct imaging and characterization of exoplanets with future segmented ground- and space-based telescopes. Wavefront sensing and control has been successfully implemented with electric field conjugation (EFC) using the FALCO Matlab package, yielding a baseline raw contrast of 1×10^(-8) in narrowband light with a Vector Vortex Coronagraph over a clear aperture. Here we report on progress towards our next HCST milestones: 1- Demonstration of 10^(-8) raw contrast levels in broadband light with the apodized vortex coronagraph using a LUVOIR B-like segmented aperture. 2- Integration of a fiber injection unit (FIU) and corresponding wavefront control algorithm to achieve 10^(-8) raw contrast in broadband light through a single mode fiber enabling high dispersion coronagraphy.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2530670DOIArticle
ORCID:
AuthorORCID
Ruane, Garreth0000-0003-4769-1665
Mawet, Dimitri0000-0002-8895-4735
Echeverri, Daniel0000-0002-1583-2040
Riggs, A. J. Eldorado0000-0002-0863-6228
Coker, Carl T.0000-0002-9954-7887
Additional Information:© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was partially supported by the National Science Foundation AST-ATI Grant 1710210.
Group:Astronomy Department
Funders:
Funding AgencyGrant Number
NSFAST-1710210
Subject Keywords:High contrast imaging, Exoplanets, Wavefront Control, Wavefront Sensing, Spectroscopy
Series Name:Proceedings of SPIE
Issue or Number:11117
Record Number:CaltechAUTHORS:20190912-141317978
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190912-141317978
Official Citation:Jorge Llop-Sayson, Garreth Ruane, Nemanja Jovanovic, Dimitri Mawet, Daniel Echeverri, A.J. Eldorado Riggs, Carl T. Coker, Grady Morrissey, and He Sun "The high-contrast spectroscopy testbed for segmented telescopes (HCST): new wavefront control demonstrations", Proc. SPIE 11117, Techniques and Instrumentation for Detection of Exoplanets IX, 111171W (9 September 2019); https://doi.org/10.1117/12.2530670
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:98620
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:12 Sep 2019 21:50
Last Modified:09 Mar 2020 13:18

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