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Mid-IR AGPMs for ELT applications

Carlomagno, Brunella and Delacroix, Christian and Absil, Olivier and Forsberg, Pontus and Habraken, Serge and Jolivet, Aїssa and Karlsson, Mikael and Mawet, Dimitri and Piron, Pierre and Surdej, Jean and Vargas Catalan, Ernesto (2014) Mid-IR AGPMs for ELT applications. In: Ground-based and Airborne Instrumentation for Astronomy V. Proceedings of SPIE. No.9147. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 914799. ISBN 9780819496157.

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The mid-infrared region is well suited for exoplanet detection thanks to the reduced contrast between the planet and its host star with respect to the visible and near-infrared wavelength regimes. This contrast may be further improved with Vector Vortex Coronagraphs (VVCs), which allow us to cancel the starlight. One flavour of the VVC is the AGPM (Annular Groove Phase Mask), which adds the interesting properties of subwavelength gratings (achromaticity, robustness) to the already known properties of the VVC. In this paper, we present the optimized designs, as well as the expected performances of mid-IR AGPMs etched onto synthetic diamond substrates, which are considered for the E-ELT/METIS instrument.

Item Type:Book Section
Related URLs:
URLURL TypeDescription DOIArticle
Absil, Olivier0000-0002-4006-6237
Karlsson, Mikael0000-0002-2011-0851
Mawet, Dimitri0000-0002-8895-4735
Surdej, Jean0000-0002-7005-1976
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 7 August 2014. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (ERC Grant Agreement n.337569) and from the French Community of Belgium through an ARC grant for Concerted Research Actions.
Funding AgencyGrant Number
European Research Council337569
Communauté française de BelgiqueUNSPECIFIED
Subject Keywords:Exoplanets detection, Mid-IR, Vector Vortex Corona.graphs, E-ELT / METIS instrument
Series Name:Proceedings of SPIE
Issue or Number:9147
Record Number:CaltechAUTHORS:20150520-074114061
Persistent URL:
Official Citation:Brunella Carlomagno ; Christian Delacroix ; Olivier Absil ; Pontus Forsberg ; Serge Habraken, et al. " Mid-IR AGPMs for ELT applications ", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914799 (July 8, 2014); doi:10.1117/12.2056280;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57681
Deposited On:20 May 2015 16:54
Last Modified:10 Nov 2021 21:53

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