Light intensity enhancement and optical nonlinear response due to localized surface plasmons in nanosize Ag sphere
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概要
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Field enhancement due to localized surface plasmons excited in nanosize Ag and coated Ag spheres has been numerically studied using the Mie theory. It has been found that light intensity enhancement becomes maximum at an appropriate diameter of spheres. This maximum has been expected to be determined from mediation of a size-dependent light-confinement effect and a size-dependent dielectric constant of Ag spheres. Such field enhancement should play a crucial role in observing strong nonlinear optical effects. For a nanosize metal sphere coated with a Kerr-nonlinear film, we have succeeded in finding optical switching and optical bistability phenomena using the modified Mie theory.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2004-09-15
著者
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Fukui Masuo
Department Of Electrical And Electronic Engineering Faculty Of Engineering The University Of Tokushi
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Haraguchi Masanobu
Department Of Electrical And Electronic Engineering Faculty Of Engineering The University Of Tokushi
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Okamoto Toshihiro
Department Of Chemistry The University Of Tokyo
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Fukui Masuo
Department of Optical Science and Technology, Faculty of Engineering, Univerity of Tokushima, 2-1 Minamijosanzima, Tokushima 770-8506, Japan
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Okamoto Toshihiro
Department of Optical Science and Technology, Faculty of Engineering, Univerity of Tokushima, 2-1 Minamijosanzima, Tokushima 770-8506, Japan
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Okamoto Toshihiro
Department of Advanced Electron Devices, The Institute of Scientific and Industrial Research (ISIR), Osaka University, Ibaraki, Osaka 567-0047, Japan
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