Multipole resonance in the interaction of a spherical Ag nanoparticle with an emitting dipole

The effect of multipole resonance in the interaction between a spherical metallic nanoparticle （MNP） and an emitting dipole is studied with the Mie theory. The results show that the absorption peak of the MNP with respect to the field of the emitting dipole is blue-shifted with the decrease of the s...

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Bibliographic Details
Published in:Chinese physics B 2014-08, Vol.23 (8), p.357-361
Main Authors: Liu, Jia-Dong, Song, Feng, Zhang, Jun, Liu, Shu-Jing, Wang, Feng-Xiao, Wang, Li-Chao
Format: Article
Language:English
Subjects:
Decay rate
Dipoles
Emittance
Multipoles
Nanostructure
Scattering
Silver
偶极子
共振带
发射
多极
球形
相互作用
金属纳米颗粒
银纳米粒子
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Summary:The effect of multipole resonance in the interaction between a spherical metallic nanoparticle （MNP） and an emitting dipole is studied with the Mie theory. The results show that the absorption peak of the MNP with respect to the field of the emitting dipole is blue-shifted with the decrease of the spacing between MNP and emitting dipole due to the enhanced multipole resonance. At a short distance, the enhanced multipole terms of scattering are not obvious compared with the dipole term. For the decay rate of the emitting dipole, multipole resonance brings about the enhancement of it largely at short spacing. For the radiative decay rate, the behavior is quite different. The dipole term is dominant at a short spacing, and the multipole term is dominant at a larger spacing.
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/23/8/084206