Transmitting Hertzian Optical Nanoantenna with Free-Electron Feed

American Chemical Society
Publication Type:
Journal Article
Nano Letters, 2010, 10 (9), pp. 3250 - 3252
Issue Date:
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A pair of coupled gold nanorods excited by a beam of free electrons acts as a transmitting Hertzian antenna in the optical part of the spectrum. Significantly enhanced resonant emission is observed from the antenna when the electron beam is injected around the junction between the rods, where the local density of electromagnetic states is elevated.
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