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Published February 25, 2008 | Submitted + Published
Journal Article Open

Surface plasmon polariton modes in a single-crystal Au nanoresonator fabricated using focused-ion-beam milling

Vesseur, E. J. R.
de Waele, R.
Lezec, H. J.
Atwater, H. A. ORCID icon
García de Abajo, F. J.
Polman, A. ORCID icon

Abstract

We use focused-ion-beam milling of a single-crystal Au surface to fabricate a 590-nm-long linear ridge that acts as a surface plasmon nanoresonator. Cathodoluminescence imaging spectroscopy is then used to excite and image surface plasmons on the ridge. Principal component analysis reveals distinct plasmonic modes, which proves confinement of surface plasmon oscillations to the ridge. Boundary-element-method calculations confirm that a linear ridge is able to support highly localized surface plasmon modes (mode diameter <100 nm). The results demonstrate that focused-ion-beam milling can be used in rapid prototyping of nanoscale single-crystal plasmonic components.

Additional Information

© 2008 American Institute of Physics. Received 12 December 2007; accepted 4 February 2008; published 28 February 2008. This work is part of the research program "Microscopy and modification of nanostructures with focused electron and ion beams" MMN of FOM, which is financially supported by NWO. The MMN program is cofinanced by FEI Company. This work is also funded by NANONED, a nanotechnology program of the Dutch Ministry of Economic Affairs. Work at Caltech is financially supported by the AFOSR under MURI Grant No. FA9550-04-1-0434. F.J.G.A. acknowledges funding from the EU (STRP-016881-SPANS).

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Submitted - 0801.1267.pdf

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August 22, 2023
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October 16, 2023