Exoplanet imaging with a phase-induced amplitude apodization coronagraph. I. Principle

Olivier Guyon, Eugene A. Pluzhnik, Raphael Galicher, Frantz Martinache, Stephen T. Ridgway, Robert A. Woodruff

Research output: Contribution to journalArticle

140 Citations (Scopus)

Abstract

Using two aspheric mirrors, it is possible to apodize a telescope beam without losing light or angular resolution: the output beam is produced by "remapping" the entrance beam to produce the desired light intensity distribution in a new pupil. We present the phase-induced amplitude apodization coronagraph (PIAAC) concept, which uses this technique, and show that it allows efficient direct imaging of extrasolar terrestrial planets with a small-sized telescope in space. The suitability of the PIAAC for exoplanet imaging is due to a unique combination of achromaticity, small inner working angle (about 1.5λ/d), high throughput, high angular resolution, and large field of view. Three-dimensional geometrical ray tracing is used to investigate the off-axis aberrations of PIAAC configurations and show that a field of view of more than 100λ/d in radius is available thanks to the correcting optics of the PIAAC, Angular diameter of the star and tip-tilt errors can be compensated for by slightly increasing the size of the occulting mask in the focal plane, with minimal impact on the system performance. Earth-sized planets at 10 pc can be detected in less than 30 s with a 4 m telescope. Wave-front quality requirements are similar to classical techniques.

Original languageEnglish (US)
Pages (from-to)744-758
Number of pages15
JournalAstrophysical Journal
Volume622
Issue number1 I
DOIs
StatePublished - Mar 20 2005
Externally publishedYes

Fingerprint

apodization
coronagraphs
extrasolar planets
telescopes
field of view
angular resolution
planet
terrestrial planets
ray tracing
pupils
wave fronts
tilt
light intensity
entrances
luminous intensity
aberration
masks
optics
mirrors
stars

Keywords

  • Planetary systems
  • Techniques: high angular resolution
  • Telescopes

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Guyon, O., Pluzhnik, E. A., Galicher, R., Martinache, F., Ridgway, S. T., & Woodruff, R. A. (2005). Exoplanet imaging with a phase-induced amplitude apodization coronagraph. I. Principle. Astrophysical Journal, 622(1 I), 744-758. https://doi.org/10.1086/427771

Exoplanet imaging with a phase-induced amplitude apodization coronagraph. I. Principle. / Guyon, Olivier; Pluzhnik, Eugene A.; Galicher, Raphael; Martinache, Frantz; Ridgway, Stephen T.; Woodruff, Robert A.

In: Astrophysical Journal, Vol. 622, No. 1 I, 20.03.2005, p. 744-758.

Research output: Contribution to journalArticle

Guyon, O, Pluzhnik, EA, Galicher, R, Martinache, F, Ridgway, ST & Woodruff, RA 2005, 'Exoplanet imaging with a phase-induced amplitude apodization coronagraph. I. Principle', Astrophysical Journal, vol. 622, no. 1 I, pp. 744-758. https://doi.org/10.1086/427771
Guyon O, Pluzhnik EA, Galicher R, Martinache F, Ridgway ST, Woodruff RA. Exoplanet imaging with a phase-induced amplitude apodization coronagraph. I. Principle. Astrophysical Journal. 2005 Mar 20;622(1 I):744-758. https://doi.org/10.1086/427771
Guyon, Olivier ; Pluzhnik, Eugene A. ; Galicher, Raphael ; Martinache, Frantz ; Ridgway, Stephen T. ; Woodruff, Robert A. / Exoplanet imaging with a phase-induced amplitude apodization coronagraph. I. Principle. In: Astrophysical Journal. 2005 ; Vol. 622, No. 1 I. pp. 744-758.
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