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Gold Helix Photonic Metamaterials: a numerical parameter study

Gansel, J. K.; Wegener, M.; Burger, S.; Linden, S.

We have recently shown that metamaterials composed of threedimensional gold helices periodically arranged on a square lattice can be used as compact “thin-film” circular polarizers with one octave bandwidth. The physics of the motif of these artificial crystals is closely related to that of microwave sub-wavelength helical antennas in end-fire geometry. Here, we systematically study the dependence of the metamaterial’s chiral optical properties on helix pitch, helix radius, two-dimensional lattice constant, wire radius, number of helix pitches, and angle of incidence. Our numerical calculations show that the optical properties are governed by resonances of the individual helices, yet modified by interaction effects. Furthermore, our study shows possibilities and limitations regarding performance optimization.

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Verlagsausgabe §
DOI: 10.5445/IR/1000017812
Veröffentlicht am 24.05.2018
DOI: 10.1364/OE.18.001059
Zitationen: 161
Web of Science
Zitationen: 154
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2010
Sprache Englisch
Identifikator ISSN: 1094-4087
KITopen-ID: 1000017812
HGF-Programm 43.14.01 (POF II, LK 01)
Photonics crystals and metamaterials
Erschienen in Optics express
Band 18
Heft 2
Seiten 1059 - 1069
Nachgewiesen in Web of Science
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