| Issue |
Europhys. Lett.
Volume 69, Number 4, February 2005
|
|
|---|---|---|
| Page(s) | 538 - 543 | |
| Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i2004-10388-9 | |
| Published online | 19 January 2005 | |
Optical near-field of multipolar plasmons of rod-shaped gold nanoparticles
1
Institute for Experimental Physics and Erwin Schrödinger Institute for Nanoscale Research, Karl-Franzens-University Graz - A-8010 Graz, Austria
2
Department of Physics, Indiana University - Bloomington, IN 47405, USA
Received:
30
August
2004
Accepted:
10
December
2004
We report on near-field measurements and calculations of the optical intensity close to rod-shaped gold nanoparticles excited at a multipolar plasmon resonance. Our results reveal a distinct optical near-field pattern and show that multipolar plasmon excitation of single nanoparticles can be imaged in the near-field. The observed optical near-field patterns can be understood in a model of standing plasmon waves.
PACS: 42.25.Hz – Wave optics: Interference / 73.20.Mf – Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) / 78.67.Bf – Optical properties of bulk materials and thin films: Nanocrystals and nanoparticles
© EDP Sciences, 2005
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