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Near-Field Plasmon Excitation on Structured Gold Films



B Dragnea, J Szarko, S Kowarik, J Feldmann, T Wiemann, S R. Leone


Surface plasmon polariton (SPP) localization control on rough metal surfaces has been achieved by varying the gap between a scanning near-field aperture probe and the surface. The qualitative explanation for this observation is based on the overlapping of spatial frequencies available for near-field excitation of the SPP, with the spectral distribution of spatial frequencies characterizing the surface roughness. We show in this Letter how this property, intrinsic to near-field microscopes, can be used to selectively excite surface electromagnetic states on nanostructures.
Nano Letters
No. 1


nanostructures, near-field scanning, surface plasmon polariton


Dragnea, B. , Szarko, J. , Kowarik, S. , Feldmann, J. , Wiemann, T. and Leone, S. (2003), Near-Field Plasmon Excitation on Structured Gold Films, Nano Letters (Accessed April 16, 2024)
Created December 31, 2002, Updated October 12, 2021