Linear dark field control: Simulation for implementation and testing on the UA wavefront control testbed

Kelsey Miller, Olivier Guyon

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

1 Scopus citations

Abstract

This paper presents the early-stage simulation results of linear dark field control (LDFC) as a new approach to maintaining a stable dark hole within a stellar post-coronagraphic PSF. In practice, conventional speckle nulling is used to create a dark hole in the PSF, and LDFC is then employed to maintain the dark field by using information from the bright speckle field. The concept exploits the linear response of the bright speckle intensity to wavefront variations in the pupil, and therefore has many advantages over conventional speckle nulling as a method for stabilizing the dark hole. In theory, LDFC is faster, more sensitive, and more robust than using conventional speckle nulling techniques, like electric field conjugation, to maintain the dark hole. In this paper, LDFC theory, linear bright speckle characterization, and first results in simulation are presented as an initial step toward the deployment of LDFC on the UA Wavefront Control testbed in the coming year.

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems V
EditorsEnrico Marchetti, Jean-Pierre Veran, Laird M. Close
PublisherSPIE
ISBN (Electronic)9781510601970
DOIs
StatePublished - Jan 1 2016
EventAdaptive Optics Systems V - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9909
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAdaptive Optics Systems V
CountryUnited Kingdom
CityEdinburgh
Period6/26/167/1/16

Keywords

  • Electric field conjugation (EFC)
  • Linear dark field control (LDFC)
  • Speckle nulling
  • 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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  • Cite this

    Miller, K., & Guyon, O. (2016). Linear dark field control: Simulation for implementation and testing on the UA wavefront control testbed. In E. Marchetti, J-P. Veran, & L. M. Close (Eds.), Adaptive Optics Systems V [99094G] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9909). SPIE. https://doi.org/10.1117/12.2232120