Optical Response of a Sphere Coupled to a Metal Substrate
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概要
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Optical response of a sphere placed above a flat Ag substrate is calculated. Localdielectric constants are assumed and exact account is taken of the retardation effect.For a Ag sphere above a Ag substrate, coupling of sphere and substrate plasmonsresults in a strong local field, whereby Raman scattering by molecules on the spheresurface is enhanced by a factor of 10'. The case ol' a dielectric sphere is also discussed.The mechanism is understood in terms of surface plasmon polariton excitation.
- 社団法人日本物理学会の論文
- 1987-04-15
著者
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Ohtaka Kazuo
Department Of Applied Physics Faculty Of Engineering Chiba University
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Inoue Masahiro
Institute for Materials Research, Tohoku University
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Inoue M
Riken Brain Sci. Inst. Saitama
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Takemori T
Institute Of Applied Physics University Of Tsukuba
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Takemori Tadashi
Institute Of Applied Physics University Of Tsukuba
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