Scattering of core-shell nanowires with the interference of electric and magnetic resonances

Wei Liu; Andrey E. Miroshnichenko; Rupert F. Oulton; Dragomir N. Neshev; Ortwin Hess; Yuri S. Kivshar

doi:10.1364/OL.38.002621

Scattering of core-shell nanowires with the interference of electric and magnetic resonances

Wei Liu^*, Andrey E. Miroshnichenko, Rupert F. Oulton, Dragomir N. Neshev, Ortwin Hess, Yuri S. Kivshar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

78 Citations (Scopus)

Abstract

We study the scattering of normally incident waves by core-shell nanowires, which support both electric and magnetic resonances. Within such nanowires, for p-polarized incident waves, each electric resonance corresponds to two degenerate scattering channels while the magnetic resonance corresponds to only one channel. Consequently, when the electric dipole (ED) and magnetic dipole (MD) are tuned to overlap spectrally, the magnitude of the ED is twice that of the magnetic one, leading to a pair of angles of vanishing scattering. We further demonstrate that the scattering features of nanowires are polarization dependent, and vanishing scattering angles also can be induced by Fano resonances due to the interference of higher-order electric modes with the broad MD mode.

Original language	English
Pages (from-to)	2621-2624
Number of pages	4
Journal	Optics Letters
Volume	38
Issue number	14
DOIs	https://doi.org/10.1364/OL.38.002621
Publication status	Published - 15 Jul 2013

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title = "Scattering of core-shell nanowires with the interference of electric and magnetic resonances",

abstract = "We study the scattering of normally incident waves by core-shell nanowires, which support both electric and magnetic resonances. Within such nanowires, for p-polarized incident waves, each electric resonance corresponds to two degenerate scattering channels while the magnetic resonance corresponds to only one channel. Consequently, when the electric dipole (ED) and magnetic dipole (MD) are tuned to overlap spectrally, the magnitude of the ED is twice that of the magnetic one, leading to a pair of angles of vanishing scattering. We further demonstrate that the scattering features of nanowires are polarization dependent, and vanishing scattering angles also can be induced by Fano resonances due to the interference of higher-order electric modes with the broad MD mode.",

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AU - Liu, Wei

AU - Miroshnichenko, Andrey E.

AU - Oulton, Rupert F.

AU - Neshev, Dragomir N.

AU - Hess, Ortwin

AU - Kivshar, Yuri S.

PY - 2013/7/15

Y1 - 2013/7/15

N2 - We study the scattering of normally incident waves by core-shell nanowires, which support both electric and magnetic resonances. Within such nanowires, for p-polarized incident waves, each electric resonance corresponds to two degenerate scattering channels while the magnetic resonance corresponds to only one channel. Consequently, when the electric dipole (ED) and magnetic dipole (MD) are tuned to overlap spectrally, the magnitude of the ED is twice that of the magnetic one, leading to a pair of angles of vanishing scattering. We further demonstrate that the scattering features of nanowires are polarization dependent, and vanishing scattering angles also can be induced by Fano resonances due to the interference of higher-order electric modes with the broad MD mode.

AB - We study the scattering of normally incident waves by core-shell nanowires, which support both electric and magnetic resonances. Within such nanowires, for p-polarized incident waves, each electric resonance corresponds to two degenerate scattering channels while the magnetic resonance corresponds to only one channel. Consequently, when the electric dipole (ED) and magnetic dipole (MD) are tuned to overlap spectrally, the magnitude of the ED is twice that of the magnetic one, leading to a pair of angles of vanishing scattering. We further demonstrate that the scattering features of nanowires are polarization dependent, and vanishing scattering angles also can be induced by Fano resonances due to the interference of higher-order electric modes with the broad MD mode.

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DO - 10.1364/OL.38.002621

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VL - 38

SP - 2621

EP - 2624

JO - Optics Letters

JF - Optics Letters

IS - 14

ER -

Scattering of core-shell nanowires with the interference of electric and magnetic resonances

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