Reflective Lyot stop low-order wavefront control for future large space telescope coronagraphs

Christopher B. Mendillo, Jaren N. Ashcraft, Kevin Zhang Derby, Ewan S. Douglas, Daewook Kim, Jared Males

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

1 Scopus citations

Abstract

Future large space telescope missions for directly imaging exoplanets with internal coronagraphs will require picometer level low-order wavefront control to reach the 1*10´10 starlight suppression required to detect terrestrial exoplanets. This paper aims to characterize the reflective Lyot stop Low-Order Wavefront Sensor (LLOWFS) for the application where a transmissive focal plane mask is used, such as the Vector Vortex Coronagraph (VVC). This paper first defines the control requirements for such a mission based on the low-order tolerance of the VVC. The LLOWFS performance is then derived through optical simulation and compared to the requirements. The performance is calculated as a function of the target star brightness and aperture size and the final closed-loop stability is simulated using varying models for telescope pointing jitter and wavefront drift.

Original languageEnglish (US)
Title of host publicationTechniques and Instrumentation for Detection of Exoplanets XI
EditorsGarreth J. Ruane
PublisherSPIE
ISBN (Electronic)9781510665743
DOIs
StatePublished - 2023
EventTechniques and Instrumentation for Detection of Exoplanets XI 2023 - San Diego, United States
Duration: Aug 21 2023Aug 24 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12680

Conference

ConferenceTechniques and Instrumentation for Detection of Exoplanets XI 2023
Country/TerritoryUnited States
CitySan Diego
Period8/21/238/24/23

Keywords

  • direct imaging
  • exoplanets
  • fine pointing
  • high-contrast imaging
  • wavefront 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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