Generation of Traveling Surface Plasmon Waves by Free-Electron Impact

The injection of a beam of free 50 keV electrons into an unstructured gold surface creates a highly localized source of traveling surface plasmons with spectrum centered around 1.8 eV. The plasmons were detected by a controlled decoupling into light with a grating at a distance from the excitation p...

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Bibliographic Details
Published in:arXiv.org 2006-04
Main Authors: Bashevoy, M V, Jonsson, F, Krasavin, A V, Zheludev, N I, Chen, Y, Stockman, M I
Format: Article
Language:English
Subjects:
Decoupling
Electron beams
Electron impact
Excitation
Free electrons
Gold
Plasmons
Online Access:Get full text
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Summary:The injection of a beam of free 50 keV electrons into an unstructured gold surface creates a highly localized source of traveling surface plasmons with spectrum centered around 1.8 eV. The plasmons were detected by a controlled decoupling into light with a grating at a distance from the excitation point. The dominant contribution to the plasmon generation appears to come from the recombination of d-band holes created by the electron beam excitation.
ISSN:2331-8422
DOI:10.48550/arxiv.0604227