| Issue |
Europhys. Lett.
Volume 66, Number 6, June 2004
|
|
|---|---|---|
| Page(s) | 785 - 791 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2003-10268-x | |
| Published online | 01 June 2004 | |
Frustrated energy transport through micro-waveguides decorated by gold nanoparticle chains
1
ICFO, Institut de Ciències Fotòniques - Jordi Girona 29, Nexus II 08034 Barcelona, Spain
2
LPUB, UMR-CNRS 5027 - 9 avenue A. Savary, F-21078 Dijon, France
3
LCAR, UMR-CNRS 5589, Université Paul Sabatier - 31062 Toulouse, France
4
CEMES, UPR-CNRS 8011 - 29 Rue Jeanne Marvig, BP4347 F-31055 Toulouse, France
Received:
5
December
2003
Accepted:
20
April
2004
This letter reports near-field optical observations of light
energy transport along micro-waveguides decorated by short chains
of gold “nanodots”. In spite of their subwavelength dimensions
(100
diameter 
height), the metallic dots
in the chain function as an efficient photonic band filter or a
nanometric Bragg mirror. Numerical simulations reproduce
the observed phenomenon and indicate that the occurrence of a band
gap for light transport through the decorated guide corresponds to
a selective absorption by the metallic chain.
PACS: 07.79.Fc – Near-field scanning optical microscopes / 73.20.Mf – Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) / 78.66.Bz – Metals and metallic alloys
© EDP Sciences, 2004
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