Optimal dark hole generation via two deformable mirrors with stroke minimization

Laurent Pueyo, Jason Kay, N. Jeremy Kasdin, Tyler Groff, Michael Mcelwain, Amir Give'on, Uslan Belikov

Research output: Contribution to journalArticle

99 Scopus citations

Abstract

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 uses 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)
Pages (from-to)6296-6312
Number of pages17
JournalApplied Optics
Volume48
Issue number32
DOIs
StatePublished - Nov 10 2009

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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    Pueyo, L., Kay, J., Kasdin, N. J., Groff, T., Mcelwain, M., Give'on, A., & Belikov, U. (2009). Optimal dark hole generation via two deformable mirrors with stroke minimization. Applied Optics, 48(32), 6296-6312. https://doi.org/10.1364/AO.48.006296