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Mode-specific direc...
Mode-specific directional emission from hybridized particle-on-a-film plasmons
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- Miljkovic, Vladimir, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Shegai, Timur, 1982 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Käll, Mikael, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Peter (author)
- Örebro universitet,Akademin för naturvetenskap och teknik,Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2011
- 2011
- English.
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In: Optics Express. - 1094-4087. ; 19:14, s. 12856-12864
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Abstract
Subject headings
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- We investigate the electromagnetic interaction between a gold nanoparticle and a thin gold film on a glass substrate. The coupling between the particle plasmons and the surface plasmon polaritons of the film leads to the formation of two localized hybrid modes, one low-energy. film-like. plasmon and one high-energy plasmon dominated by the nanoparticle. We find that the two modes have completely different directional scattering patterns on the glass side of the film. The high-energy mode displays a characteristic dipole emission pattern while the low-energy mode sends out a substantial part of its radiation in directions parallel to the particle dipole moment. The relative strength of the two radiation patterns vary strongly with the distance between the particle and the film, as determined by the degree of particle-film hybridization. (C) 2011 Optical Society of America
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Fysik
- Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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