Optical antennas based on coupled nanoholes in thin metal films
Artikel i vetenskaplig tidskrift, 2007

The ability to control optical effects at the nanoscale is a challenge that could be of great importance for a range of photonic applications. However, progress requires a deep understanding of the relationship between near-field and far-field properties of the individual elements of the nanostructure, as well as of the role of nano-optical interactions. Here, we show that the strong interaction between nanoholes in optically thin metal films can be used to readily tune their spectral response and visibility. Control of this interaction in short chains of nanoholes enables either amplification or almost total suppression of the scattered light. The phenomena are interpreted in terms of hole coupling mediated via antisymmetric surface plasmon polaritons, which makes the nanohole chains effectively behave as linear wire antennas.

Författare

Yury Alaverdyan

Chalmers, Teknisk fysik, Bionanofotonik

Borja Sepulveda

Chalmers, Teknisk fysik, Bionanofotonik

Lisa Eurenius

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Eva Olsson

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Mikael Käll

Chalmers, Teknisk fysik, Bionanofotonik

Nature Physics

1745-2473 (ISSN)

Vol. 3 884-889

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1038/nphys785