Kuttge, M. and Vesseur, E. J. R. and Verhoeven, J. and Lezec, H. J. and Atwater, H. A. and Polman, A. (2008) Loss mechanisms of surface plasmon polaritons on gold probed by cathodoluminescence imaging spectroscopy. Applied Physics Letters, 93 (11). Art. No. 113110. ISSN 0003-6951 http://resolver.caltech.edu/CaltechAUTHORS:KUTapl08
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Abstract
We use cathodoluminescence imaging spectroscopy to excite surface plasmon polaritons and measure their decay length on single crystal and polycrystalline gold surfaces. The surface plasmon polaritons are excited on the gold surface by a nanoscale focused electron beam and are coupled into free space radiation by gratings fabricated into the surface. By scanning the electron beam on a line perpendicular to the gratings, the propagation length is determined. Data for single-crystal gold are in agreement with calculations based on dielectric constants. For polycrystalline films, grain boundary scattering is identified as additional loss mechanism, with a scattering coefficient SG=0.2%.
| Item Type: | Article |
|---|---|
| Additional Information: | ©2008 American Institute of Physics. Received 4 April 2008; accepted 29 August 2008; published 18 September 2008. This work is part of the research program Microscopy and modification of nanostructures (MMN) with focused electron and ion beams of FOM, which is financially supported by NWO. The MMN program is co-financed by FEI Co. This work is also funded by NANONED, a nanotechnology program of the Dutch Ministry of Economic Affairs. Work at Caltech is financially supported by the Air Force Office of Scientific Research under MURI Grant No. FA9550-04-1-0434. |
| Uncontrolled Keywords: | cathodoluminescence, grain boundaries, metallic thin films, polaritons, surface plasmons |
| Record Number: | CaltechAUTHORS:KUTapl08 |
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:KUTapl08 |
| Usage Policy: | You are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. |
| Metadata Review: | All Records > Caltech Library Services |
| ID Code: | 11695 |
| Collection: | CaltechAUTHORS |
| Deposited By: | Archive Administrator |
| Deposited On: | 19 Sep 2008 17:39 |
| Last Modified: | 19 Sep 2008 17:39 |
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