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URN:
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http://URN.fi/URN:NBN:fi:tty-201103311166
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Title:
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Chiral coupling in gold nanodimers |
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Author:
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Husu, Hannu; Canfield, Brian K.; Laukkanen, Janne; Bai, Benfeng; Kuittinen, Markku; Turunen, Jari; Kauranen, Martti |
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Publication type:
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Artikkeli - Article |
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Issue date:
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2008 |
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DOI:
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http://dx.doi.org/10.1063/1.3021017
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Description:
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Copyright (2008) 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.
The following article appeared in Applied Physics Letters and may be found at http://apl.aip.org/resource/1/applab/v93/i18/p183115_s1. |
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University:
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Tampereen teknillinen yliopisto |
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Faculty:
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Luonnontieteiden ja ympäristötekniikan tiedekunta – Faculty of Science and Environmental Engineering |
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Department:
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Fysiikan laitos – Department of Physics |
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Abstract:
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Second-harmonic generation from T-shaped gold nanodimers with nanogaps has different efficiencies for left- and right-hand circularly polarized fundamental light. The difference arises from the chiral symmetry breaking of the dimers due to nonorthogonal mutual orientations of the horizontal and vertical bars of the T shape and depends on the gap size. Unexpectedly, the smallest gap with presumably the strongest coupling gives rise to only a small difference. All results can be explained by considering the distribution of the polarized local field in the structure. |
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Copyright:
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This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. |