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Proceedings Paper

Asymmetric direction selective filter elements based on high-contrast gratings
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Paper Abstract

We present novel filter elements with an asymmetric angle dependent transmission based on high-contrast gratings. Asymmetric means a different efficiency for positive and negative incidence angles. Our approach provides the realization of asymmetric direction selective filters by using blaze-like grating structures combined with subwavelength high contrast gratings respectively grating periods in the resonance domain. We also discuss the influence of the effective medium theory on the transmission function depending on the angle of the incident light. For realization of those high contrast gratings Silicon is chosen as material with high refractive index and adequate compatibility with semiconductor fabrication.

Paper Details

Date Published: 15 March 2013
PDF: 8 pages
Proc. SPIE 8633, High Contrast Metastructures II, 86330Z (15 March 2013); doi: 10.1117/12.2003930
Show Author Affiliations
Stefan Steiner, Friedrich-Schiller-Univ. Jena (Germany)
Stefanie Kroker, Friedrich-Schiller-Univ. Jena (Germany)
Thomas Käsebier, Friedrich-Schiller-Univ. Jena (Germany)
Daniel Voigt, Friedrich-Schiller-Univ. Jena (Germany)
Jörg Fuchs, Friedrich-Schiller-Univ. Jena (Germany)
Frank Fuchs, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Ernst-Bernhard Kley, Friedrich-Schiller-Univ. Jena (Germany)
Andreas Tünnermann, Friedrich-Schiller-Univ. Jena (Germany)
Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)

Published in SPIE Proceedings Vol. 8633:
High Contrast Metastructures II
Connie J. Chang-Hasnain; Fumio Koyama; Alan Eli Willner; Weimin Zhou, Editor(s)

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