Stopping surface magneto-plasmons by non-reciprocal graded waveguides

Jin Wang; Qian Yi Shi; Ya Jie Liu; Hui Yuan Dong; Kin Hung Fung; Zheng Gao Dong

doi:10.1016/j.physleta.2021.127279

Stopping surface magneto-plasmons by non-reciprocal graded waveguides

Jin Wang, Qian Yi Shi, Ya Jie Liu, Hui Yuan Dong, Kin Hung Fung, Zheng Gao Dong

Research output: Journal article publication › Journal article › Academic research › peer-review

7 Citations (Scopus)

Abstract

We present that the guided surface magneto-plasmons (SMPs) can be finely tailored and truely stopped at specific location in a class of non-reciprocal graded waveguide system. By examining the dispersion properties of SMPs, the one-way propagating wave stops eventually at the band edge in the proposed waveguide system, where the group velocity vanishes. Meanwhile, the stopped location can be readily tuned by an external static magnetic field. Numerical calculations on the group velocity of propagating SMPs and the spatial field distribution are employed to verify the formation of hotspots. The impact of intrinsic absorption as well as fabrication disorder involved in the realistic waveguide structure is also investigated. The results may suggest an effective method for fast modulation on wave harvesting and energy concentration through external magnetic field.

Original language	English
Article number	127279
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	398
DOIs	https://doi.org/10.1016/j.physleta.2021.127279
Publication status	Published - 17 May 2021

Keywords

Magneto-optical materials
Planar waveguides
Surface plasmons

ASJC Scopus subject areas

General Physics and Astronomy

More information

10.1016/j.physleta.2021.127279

Cite this

@article{e034c2d5555947fda75e050b5e950b47,

title = "Stopping surface magneto-plasmons by non-reciprocal graded waveguides",

abstract = "We present that the guided surface magneto-plasmons (SMPs) can be finely tailored and truely stopped at specific location in a class of non-reciprocal graded waveguide system. By examining the dispersion properties of SMPs, the one-way propagating wave stops eventually at the band edge in the proposed waveguide system, where the group velocity vanishes. Meanwhile, the stopped location can be readily tuned by an external static magnetic field. Numerical calculations on the group velocity of propagating SMPs and the spatial field distribution are employed to verify the formation of hotspots. The impact of intrinsic absorption as well as fabrication disorder involved in the realistic waveguide structure is also investigated. The results may suggest an effective method for fast modulation on wave harvesting and energy concentration through external magnetic field.",

keywords = "Magneto-optical materials, Planar waveguides, Surface plasmons",

author = "Jin Wang and Shi, {Qian Yi} and Liu, {Ya Jie} and Dong, {Hui Yuan} and Fung, {Kin Hung} and Dong, {Zheng Gao}",

note = "Funding Information: This work is supported by the Natural Science Foundation of Jiangsu Province ( BK20181263 ) and National Natural Science Foundation of China (NSFC) ( 11774053 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = may,

day = "17",

doi = "10.1016/j.physleta.2021.127279",

language = "English",

volume = "398",

journal = "Physics Letters, Section A: General, Atomic and Solid State Physics",

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T1 - Stopping surface magneto-plasmons by non-reciprocal graded waveguides

AU - Wang, Jin

AU - Shi, Qian Yi

AU - Liu, Ya Jie

AU - Dong, Hui Yuan

AU - Fung, Kin Hung

AU - Dong, Zheng Gao

N1 - Funding Information: This work is supported by the Natural Science Foundation of Jiangsu Province ( BK20181263 ) and National Natural Science Foundation of China (NSFC) ( 11774053 ). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/5/17

Y1 - 2021/5/17

N2 - We present that the guided surface magneto-plasmons (SMPs) can be finely tailored and truely stopped at specific location in a class of non-reciprocal graded waveguide system. By examining the dispersion properties of SMPs, the one-way propagating wave stops eventually at the band edge in the proposed waveguide system, where the group velocity vanishes. Meanwhile, the stopped location can be readily tuned by an external static magnetic field. Numerical calculations on the group velocity of propagating SMPs and the spatial field distribution are employed to verify the formation of hotspots. The impact of intrinsic absorption as well as fabrication disorder involved in the realistic waveguide structure is also investigated. The results may suggest an effective method for fast modulation on wave harvesting and energy concentration through external magnetic field.

AB - We present that the guided surface magneto-plasmons (SMPs) can be finely tailored and truely stopped at specific location in a class of non-reciprocal graded waveguide system. By examining the dispersion properties of SMPs, the one-way propagating wave stops eventually at the band edge in the proposed waveguide system, where the group velocity vanishes. Meanwhile, the stopped location can be readily tuned by an external static magnetic field. Numerical calculations on the group velocity of propagating SMPs and the spatial field distribution are employed to verify the formation of hotspots. The impact of intrinsic absorption as well as fabrication disorder involved in the realistic waveguide structure is also investigated. The results may suggest an effective method for fast modulation on wave harvesting and energy concentration through external magnetic field.

KW - Magneto-optical materials

KW - Planar waveguides

KW - Surface plasmons

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U2 - 10.1016/j.physleta.2021.127279

DO - 10.1016/j.physleta.2021.127279

M3 - Journal article

AN - SCOPUS:85102472965

SN - 0375-9601

VL - 398

JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

M1 - 127279

ER -

Stopping surface magneto-plasmons by non-reciprocal graded waveguides

Abstract

Keywords

ASJC Scopus subject areas

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