Double nanohole apex-enhanced transmission in metal films

Double nanohole apex-enhanced transmission in metal films

We first present experimental results of enhanced transmission through nanofabricated double-hole arrays in a gold film. An increase in the transmission is observed when the holes are overlapping to produce two apexes, with the transmission more than doubling when the apexes are nearly touching. Whe...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied physics. B, Lasers and optics Lasers and optics, 2006-07, Vol.84 (1-2), p.25-28
Hauptverfasser: Kumar, L.K.S., Lesuffleur, A., Hughes, M.C., Gordon, R.
Format: Artikel
Sprache:eng
Schlagworte:
Apexes
Arrays
Finite difference method
Mathematical analysis
Nanocomposites
Nanomaterials
Nanostructure
Spectra
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We first present experimental results of enhanced transmission through nanofabricated double-hole arrays in a gold film. An increase in the transmission is observed when the holes are overlapping to produce two apexes, with the transmission more than doubling when the apexes are nearly touching. When the holes are non-overlapping, the transmission maximum drops. The measured spectra through these arrays showed a red-shift in the peak transmission wavelength around 770 nm of nearly 30 nm. These experimental results agree well with our finite-difference time-domain simulations of the double-hole arrays.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-006-2291-1