Demonstration of a symmetric dark hole with a stroke-minimizing correction algorithm

Jason D. Kay, Laurent A. Pueyo, N. Jeremy Kasdin

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

5 Scopus citations


The past decade has seen a significant growth in research targeted at space based observatories for imaging exosolar planets. The challenge is in designing an imaging system for high-contrast. Even with a perfect coronagraph that modifies the point spread function to achieve high-contrast, wavefront sensing and control is needed to correct the errors in the optics and generate a "dark hole". The high-contrast imaging laboratory at Princeton University is equipped with two Boston Micromachines Kilo-DMs. We review here an algorithm designed to achieve high-contrast on both sides of the image plane while minimizing the stroke necessary from each deformable mirror (DM). This algorithm uses the first DM to correct for amplitude aberrations and the second DM to create a flat wavefront in the pupil plane. We then show the first results obtained at Princeton with this correction algorithm, and we demonstrate a symmetric dark hole in monochromatic light.

Original languageEnglish (US)
Title of host publicationMEMS Adaptive Optics III
StatePublished - 2009
EventMEMS Adaptive Optics III - San Jose, CA, United States
Duration: Jan 27 2009Jan 29 2009

Publication series

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


OtherMEMS Adaptive Optics III
Country/TerritoryUnited States
CitySan Jose, CA

All Science Journal Classification (ASJC) codes

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


  • Adaptive optics
  • High-contrast imaging
  • Wavefront correction


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