Article
Photoemission from Localized Surface Plasmons in Fractal Metal Nanostructures
Applied Physics Letters
Sponsor
This work was supported by the Department of Energy Basic Science office under Grant No. DE-FG02-07ER46406.
Document Type
Article
Publication Date
6-1-2010
Subjects
- Photoemission,
- Surface plasmon resonance,
- Nanostructures,
- Electron microscopes
Disciplines
Abstract
We use photoemission microscopy to characterize localized surface plasmon distributions in nanostructured gold layers on indium-tin-oxide/glass substrates. The Au films have a fractal dimension of ∼1.3 and smallest feature sizes of ∼100 nm. We use femtosecond laser pulses at a wavelength of ∼800 nm for the plasmon excitation. Photoelectron emission occurs by a three-photon process in localized areas of indium-tin-oxide with ∼70 nm diameter. In these areas the photoemission rate is enhanced several thousand fold compared to nonstructured surface areas. The results show that plasmon enhanced photoemission can be induced in a nonabsorbing material in proximity to a plasmon-active metal nanostructure.
Rights
© 2010 American Institute of Physics
Locate the Document
DOI
10.1063/1.3457921
Persistent Identifier
http://archives.pdx.edu/ds/psu/7222
Citation Information
Word, R. C., Dornan, T. T., & Könenkamp, R. R. (2010). Photoemission from localized surface plasmons in fractal metal nanostructures. Applied Physics Letters, 96(25), 251110
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Applied Physics Letters, 96(25), 251110 and may be found at https://doi.org/10.1063/1.3457921