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Optical response of...
Optical response of supported gold nanodisks
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- Mendoza-Galvan, A. (author)
- Cinvestav-IPN, Unidad Querétaro, Querétaro, Mexico,Linköpings universitet,Linköping University,Centro de Investigacion y de Estudios Avanzados (CINVESTAV),Centro de Investigacion y de Estudios Avanzados Centro de Investigacion y de Estudios Avanzados (CINVESTAV)
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- Järrendahl, Kenneth (author)
- Linköpings universitet,Tillämpad optik,Tekniska högskolan,Linköping University
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- Dmitriev, Alexander, 1975 (author)
- Department of Applied Physics, Chalmers University of Technology, Göteborg,Chalmers tekniska högskola,Chalmers University of Technology
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- Pakizeh, Tavakol, 1977 (author)
- Faculty of Electrical and Computer Engineering, K. N. Toosi University of Technology, Tehran, Iran,K. N. Toosi University of Technology
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- Käll, Mikael, 1963 (author)
- Department of Applied Physics, Chalmers University of Technology, Göteborg,Chalmers tekniska högskola,Chalmers University of Technology
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- Arwin, Hans (author)
- Linköpings universitet,Tillämpad optik,Tekniska högskolan,Linköping University
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(creator_code:org_t)
- Optical Society of America (OSA), 2011
- 2011
- English.
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In: Optics Express. - : Optical Society of America (OSA). - 1094-4087. ; 19:13, s. 12093-12107
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Abstract
Subject headings
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- It is shown that the ellipsometric spectra of short range ordered planar arrays of gold nanodisks supported on glass substrates can be described by modeling the nanostructured arrays as uniaxial homogeneous layers with dielectric functions of the Lorentz type. However, appreciable deviations from experimental data are observed in calculated spectra of irradiance measurements. A qualitative and quantitative description of all measured spectra is obtained with a uniaxial effective medium dielectric function in which the nanodisks are modeled as oblate spheroids. Dynamic depolarization factors in the long-wavelength approximation and interaction with the substrate are considered. Similar results are obtained calculating the optical spectra using the island-film theory. Nevertheless, a small in-plane anisotropy and quadrupolar coupling effects reveal a very complex optical response of the nanostructured arrays.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
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