Coherent imaging of nanoscale plasmon patterns with a carbon nanotube optical probe

We introduce a carbon nanotube as optical near-field probe and apply it to visualize the plasmon fields of metal nanostructures in both amplitude and phase at 30 nm resolution. With 91 nm Au disks designed for fundamental plasmon resonance, we observe the antiphase optical fields near two pole regio...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Applied physics letters 2003-07, Vol.83 (2), p.368-370
Hauptverfasser: Hillenbrand, R., Keilmann, F., Hanarp, P., Sutherland, D. S., Aizpurua, J.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We introduce a carbon nanotube as optical near-field probe and apply it to visualize the plasmon fields of metal nanostructures in both amplitude and phase at 30 nm resolution. With 91 nm Au disks designed for fundamental plasmon resonance, we observe the antiphase optical fields near two pole regions that are evidence of dipolar oscillation, in good agreement with theoretical field patterns. This opens the door to phase-sensitively map optical propagation and storage in photonic crystals and nanooptic resonators or circuits, in particular to verify coherent control of plasmon polaritons.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1592629