Shaped pupil coronagraphy for WFIRST: High-contrast broadband testbed demonstration

Eric Cady, Kunjithapatham Balasubramanian, Jessica Gersh-Range, Jeremy Kasdin, Brian Kern, Raymond Lam, Camilo Mejia Prada, Dwight Moody, Keith Patterson, Ilya Poberezhskiy, A. J.Eldorado Riggs, Byoung Joon Seo, Fang Shi, Hong Tang, John Trauger, Hanying Zhou, Neil Zimmerman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

The Shaped Pupil Coronagraph (SPC) is one of the two operating modes of the WFIRST coronagraph instrument. The SPC provides starlight suppression in a pair of wedge-shaped regions over an 18% bandpass, and is well suited for spectroscopy of known exoplanets. To demonstrate this starlight suppression in the presence of expected onorbit input wavefront disturbances, we have recently built a dynamic testbed at JPL analogous to the WFIRST flight instrument architecture, with both Hybrid Lyot Coronagraph (HLC) and SPC architectures and a Low Order Wavefront Sensing and Control (LOWFS/C) subsystem to apply, sense, and correct dynamic wavefront disturbances. We present our best up-to-date results of the SPC mode demonstration from the testbed, in both static and dynamic conditions, along with model comparisons. HLC results will be reported separately.

Original languageEnglish (US)
Title of host publicationTechniques and Instrumentation for Detection of Exoplanets VIII
EditorsStuart Shaklan
PublisherSPIE
ISBN (Electronic)9781510612570
DOIs
StatePublished - 2017
EventTechniques and Instrumentation for Detection of Exoplanets VIII 2017 - San Diego, United States
Duration: Aug 8 2017Aug 10 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10400
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherTechniques and Instrumentation for Detection of Exoplanets VIII 2017
CountryUnited States
CitySan Diego
Period8/8/178/10/17

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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