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Proceedings Paper

Flexible optical-infrared metafilter
Author(s): Jean-Baptiste Brückner; Vincent Brissonneau; Judikaël Le Rouzo; Abdelkerim Ferchichi; Cécile Gourgon; Christophe Dubarry; Gérard Berginc; Ludovic Escoubas
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Paper Abstract

By combining the antireflective properties from gradual changes in the effective refractive index and cavity coupling from cone gratings, and the efficient optical behavior of a tungsten film, we have conceived a flexible filter showing very broad antireflective (AR) properties from the visible to short wavelength infrared region (SWIR: 0.7-1.5 μm) and simultaneously a mirror-like behavior in the mid-infrared wavelength region (MWIR: 3-5 μm) and long-infrared wavelength region (LWIR: 8 to 15 μm). Nanoimprint technology has permitted us to replicate inverted cone patterns on a large scale on a flexible polymer, afterwards coated with a thin tungsten film. This optical metafilter is of great interest in the stealth domain where optical signature reduction from the optical to SWIR region is an important matter. As it also acts as selective thermal emitter offering a good solar-absorption/ infrared-emissivity ratio, interests are found as well for solar heating applications.

Paper Details

Date Published: 19 February 2014
PDF: 7 pages
Proc. SPIE 8994, Photonic and Phononic Properties of Engineered Nanostructures IV, 89941L (19 February 2014); doi: 10.1117/12.2039023
Show Author Affiliations
Jean-Baptiste Brückner, Institut Materiaux Nanoelectronique de Provence, CNRS, Aix-Marseille Univ. (France)
Domaine Univ. de Saint-Jérôme (France)
Vincent Brissonneau, CEA-Liten, DTNM (France)
Judikaël Le Rouzo, Institut Materiaux Nanoelectronique de Provence, CNRS, Aix-Marseille Univ. (France)
Domaine Univ. de Saint-Jérôme (France)
Abdelkerim Ferchichi, LTM, CNRS (France)
Cécile Gourgon, LTM, CNRS (France)
Christophe Dubarry, CEA-Liten, DTNM (France)
Gérard Berginc, Thales Optronique S.A. (France)
Ludovic Escoubas, Institut Materiaux Nanoelectronique de Provence, CNRS, Aix-Marseille Univ. (France)
Domaine Univ. de Saint-Jérôme (France)


Published in SPIE Proceedings Vol. 8994:
Photonic and Phononic Properties of Engineered Nanostructures IV
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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