High-frequency folding and optimal phase conjugation for high-contrast adaptive optics

Amir Give'on, N. J. Kasdin, R. J. Vanderbei, Y. Avitzour

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


Conventional adaptive optics methods use phase conjugation based on measurements of the phase aberrations at the pupil plane. The measurements are typically done using a Shack-Hartmann sensor sampling at spatial frequencies determined by the spatial frequency limitations of the deformable mirror. The work presented here shows that the nulling needed for high contrast imaging cannot be achieved using such a methodology. Linear combinations of high frequencies in the aberration at the pupil plane "fold" and appear as low frequency aberrations at the image plane. We present an optimized solution for the shape of the deformable mirror based on the Fourier decomposition of the effective phase aberration.

Original languageEnglish (US)
Article number155
Pages (from-to)1438-1449
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberPART 3
StatePublished - 2004
EventAdvancements in Adaptive Optics - Glasgow, United Kingdom
Duration: Jun 21 2004Jun 25 2004

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
  • Phase conjugation
  • TPF


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