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URN:
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http://URN.fi/URN:NBN:fi:tty-201103311154
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Title:
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Linear and nonlinear optical responses influenced by broken symmetry in an array of gold nanoparticles |
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Author:
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Canfield, Brian K.; Kujala, Sami; Jefimovs, Konstantins; 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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2004 |
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DOI:
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http://dx.doi.org/10.1364/OPEX.12.005418
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Description:
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This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-22-5418. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
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University:
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Tampereen teknillinen yliopisto |
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Department:
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Fysiikan laitos – Institute of Physics |
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Abstract:
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An array of low-symmetry, L-shaped gold nanoparticles is shown to exhibit high sensitivity to the state of incident polarization. Small imperfections in the shape of the actual particles, including asymmetric arm lengths and edge distortions, break the symmetry attributed to an ideal particle. This broken symmetry leads to a large angular displacement of the extinction axes from their expected locations. More significantly, second-harmonic generation experiments reveal significant second-order susceptibility tensor components forbidden to the ideal symmetry. |
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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. |