Broadband wavefront control in a pupil mapping coronagraph

Stuart B. Shaklan, Amir Give'on, Ruslan Belikov, Laurent Pueyo, Olivier Guyon

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

Pupil mapping (a.k.a. Phase-Induced Amplitude Apodization, or PIAA) is a promising technique in high-dynamic range stellar coronagraphy that obtains higher throughput and better inner working angle than any other known approach. As with any coronagraph, the optical surface requirements and the diameter of the controllable region in the image plane are tied to the wavefront control system and optical bandpass. For example, in a monochromatic bandpass, a single ideal deformable mirror (DM) can create a dark hole with a diameter limited by its Nyquist frequency, even for highly aberrated optics. In broadband light, the depth of the dark hole is linked to the wavelength dependence of aberrations, their spatial frequency content, and their propagation through the system. We derive requirements on the surface height and reflectivity power spectral densities for optics in the PIAA system and describe a sequential-DM architecture that will achieve high-contrast over a large optical bandwidth.

Original languageEnglish (US)
Article number66930R
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6693
DOIs
StatePublished - Dec 1 2007
Externally publishedYes
EventTechniques and Instrumentation for Detection of Exoplanets III - San Diego, CA, United States
Duration: Aug 28 2007Aug 30 2007

Keywords

  • Coronagraph
  • High-contrast imaging
  • PIAA
  • Pupil mapping
  • Telescope requirements

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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