Published In

Applied Physics Letters

Document Type

Article

Publication Date

6-1-2010

Subjects

Photoemission, Surface plasmon resonance, Nanostructures, Electron microscopes

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.

Description

Article appears in Applied Physics Letters (http://apl.aip.org/) and is copyrighted (2010) by the American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

DOI

10.1063/1.3457921

Persistent Identifier

http://archives.pdx.edu/ds/psu/7222

Included in

Physics Commons

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