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Proceedings Paper

The annular groove phase mask coronagraph: an achromatic optical vortex
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Paper Abstract

The Annular Groove Phase Mask coronagraph (AGPM) is an intrinsically achromatic vectorial vortex. It consists of integrated subwavelength optical elements whose space-variant polarization properties can be engineered and optimized to synthesize one of the theoretically most efficient coronagraphs. This paper briefly recalls the principles of the AGPM, presents the benefit of its implementation inside a polarimetric differential imager, realistic numerical simulations assessing its performances, as well as the current status of the near-infrared and visible prototype manufacturing operations.

Paper Details

Date Published: 19 September 2007
PDF: 9 pages
Proc. SPIE 6693, Techniques and Instrumentation for Detection of Exoplanets III, 66931M (19 September 2007); doi: 10.1117/12.758406
Show Author Affiliations
Dimitri Mawet, Univ. de Liège (Belgium)
Pierre Riaud, Observatoire de Paris a Meudon (France)
Charles Hanot, Univ. de Liège (Belgium)
Denis Vandormael, Univ. de Liège (Belgium)
Jérôme Loicq, Univ. de Liège (Belgium)
Jacques Baudrand, Observatoire de Paris a Meudon (France)
Jean Surdej, Univ. de Liège (Belgium)
Serge Habraken, Univ. de Liège (Belgium)

Published in SPIE Proceedings Vol. 6693:
Techniques and Instrumentation for Detection of Exoplanets III
Daniel R. Coulter, Editor(s)

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