The space coronagraph optical bench (SCoOB): 2. wavefront sensing and control in a vacuum-compatible coronagraph testbed for spaceborne high-contrast imaging technology

Kyle Van Gorkom, Ewan S. Douglas, Jaren N. Ashcraft, Sebastiaan Haffert, Daewook Kim, Heejoo Choi, Ramya M. Anche, Jared R. Males, Kian Milani, Kevin Derby, Lori Harrison, Olivier Durney

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

5 Scopus citations

Abstract

The 2020 Decadal Survey on Astronomy and Astrophysics endorsed space-based high contrast imaging for the detection and characterization of habitable exoplanets as a key priority for the upcoming decade. To advance the maturity of starlight suppression techniques in a space-like environment, we are developing the Space Coronagraph Optical Bench (SCoOB) at the University of Arizona, a new thermal vacuum (TVAC) testbed based on the Coronagraphic Debris Exoplanet Exploring Payload (CDEEP), a SmallSat mission concept for high contrast imaging of circumstellar disks in scattered light. When completed, the testbed will combine a vector vortex coronagraph (VVC) with a Kilo-C microelectromechanical systems (MEMS) deformable mirror from Boston Micromachines Corp (BMC) and a self-coherent camera (SCC) with a goal of raw contrast surpassing 10−8 at visible wavelengths. In this proceedings, we report on our wavefront sensing and control efforts on this testbed in air, including the as-built performance of the optical system and the implementation of algorithms for focal-plane wavefront control and digging dark holes (regions of high contrast in the focal plane) using electric field conjugation (EFC) and related algorithms.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2022
Subtitle of host publicationOptical, Infrared, and Millimeter Wave
EditorsLaura E. Coyle, Shuji Matsuura, Marshall D. Perrin
PublisherSPIE
ISBN (Electronic)9781510653412
DOIs
StatePublished - 2022
EventSpace Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave - Montreal, Canada
Duration: Jul 17 2022Jul 22 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12180
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceSpace Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave
Country/TerritoryCanada
CityMontreal
Period7/17/227/22/22

Keywords

  • coronagraphy
  • deformable mirrors
  • high contrast imaging
  • wavefront sensing and control

ASJC Scopus subject areas

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

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