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Coronagraph design with the electric field conjugation algorithm

Llop-Sayson, Jorge and Riggs, A. J. Eldorado and Mawet, Dimitri and Moody, Dwight C. and Kern, Brian and Sidick, Erkin (2022) Coronagraph design with the electric field conjugation algorithm. Journal of Astronomical Telescopes, Instruments, and Systems, 8 (1). Art. No. 015003. ISSN 2329-4124. doi:10.1117/1.jatis.8.1.015003.

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The requirements for a coronagraph instrument to image and obtain spectra of rocky planets around bright stars from space are tight. Indeed, the goal of imaging an Earth-like planet requires a starlight suppression system that cancels light to a level of 10⁻¹⁰ with sufficient stability and robustness to errors. Furthermore, the key science questions necessitate an adequate sample size; consequently, the throughput of the coronagraph drives the achievable yield of a given mission. The trade among achievable raw contrast, sensitivity to wavefront errors, and throughput poses a challenging problem in coronagraph design. The complexity of this problem drives us toward the simultaneous solving of all optical elements. We present a set of methods to optimize the design of a coronagraph. We implement these for the case of the hybrid Lyot coronagraph in the context of the Nancy Grace Roman Space Telescope Coronagraph Instrument. We discuss our findings in terms of coronagraph instrument design, and optical subsystems, and performance interplay.

Item Type:Article
Related URLs:
URLURL TypeDescription
Llop-Sayson, Jorge0000-0002-3414-784X
Riggs, A. J. Eldorado0000-0002-0863-6228
Mawet, Dimitri0000-0002-8895-4735
Additional Information:© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE). Paper 21092 received Aug. 16, 2021; accepted for publication Jan. 28, 2022; published online Feb. 26, 2022. This work was partially supported by the National Science Foundation AST-ATI Grant No. 1710210. The material is based upon work supported by NASA SAT under Award No. 80NSSC20K0624. 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:direct imaging of exoplanets; high-contrast imaging; coronagraphs; coronagraph design
Issue or Number:1
Record Number:CaltechAUTHORS:20220301-900025000
Persistent URL:
Official Citation:Jorge Llop-Sayson, A. J. Eldorado Riggs, Dimitri Mawet, Dwight C. Moody, Brian Kern, and Erkin Sidick "Coronagraph design with the electric field conjugation algorithm," Journal of Astronomical Telescopes, Instruments, and Systems 8(1), 015003 (26 February 2022).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:113666
Deposited By: George Porter
Deposited On:02 Mar 2022 00:41
Last Modified:02 Mar 2022 00:41

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