Amplitude and phase correction for high-contrast imaging using fourier decomposition

Amir Give'on, N. Jeremy Kasdin, Robert J. Vanderbei, Yoav Avitzour

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

Conventional adaptive optics systems correct the wavefront by adjusting a deformable mirror based on measurements of the phase aberration taken in a pupil plane. The ability of this technique, known as phase conjugation, to correct aberrations is normally limited by the maximum spatial frequency of the DM. In this paper we show that conventional phase conjugation is not able to achieve the dark nulls needed for high-contrast imaging. Linear combinations of high frequencies in the aberration at the pupil plane "fold" and appear as low frequency aberrations at the image plane. After describing the frequency folding phenomenon, we present an alternative optimized solution for the shape of the deformable mirror based on the Fourier decomposition of the effective phase and amplitude aberrations.

Original languageEnglish (US)
Article number590516
Pages (from-to)1-11
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5905
DOIs
StatePublished - Dec 1 2005
EventTechniques and Instrumentation for Detection of Exoplanets II - San Diego, CA, United States
Duration: Aug 2 2005Aug 4 2005

All Science Journal Classification (ASJC) codes

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

Keywords

  • Adaptive optics
  • High-contrast imaging
  • TPF

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