Surface-Plasmon-Polaritons-Assisted Enhanced Magnetic Response at Optical Frequencies in Metamaterials

Jing Chen; Chaojun Tang; Peng Mao; Cheng Peng; Depeng Gao; Ying Yu; Qiugu Wang; Labao Zhang

doi:10.1109/JPHOT.2015.2506342

IEEE Photonics Journal (Jan 2016)

Surface-Plasmon-Polaritons-Assisted Enhanced Magnetic Response at Optical Frequencies in Metamaterials

Jing Chen,
Chaojun Tang,
Peng Mao,
Cheng Peng,
Depeng Gao,
Ying Yu,
Qiugu Wang,
Labao Zhang

Affiliations

Jing Chen: College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
Chaojun Tang: Department of Applied Physics, Zhejiang University of Technology, Hangzhou, China
Peng Mao: National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, China
Cheng Peng: College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
Depeng Gao: College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
Ying Yu: College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
Qiugu Wang: Department of Electrical and Computer Engineering, Iowa State University, Ames, IA, USA
Labao Zhang: National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, China

DOI: https://doi.org/10.1109/JPHOT.2015.2506342
Journal volume & issue: Vol. 8, no. 1
pp. 1 – 7

Abstract

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We theoretically study the coupling of magnetic plasmon polaritons (MPPs) with propagating surface plasmon polaritons (SPPs) in a system composed of an array of metal nanowires close to a metal film with a dielectric spacer. Strong coupling between MPPs and SPPs is observed, manifested by the anticrossing behavior of the resonant positions in the reflection spectra. It creates narrow-band hybridized MPPs with Rabi-type splitting as large as 250 meV. Moreover, we also found that the coupling between the MPPs and the SPPs can be tailored by the period of the metal nanowire array to affect the magnetic response of the plasmonic structure. Above the resonant wavelength of the MPPs, coupling between two kinds of resonance modes can lead to a 20-fold enhancement of the magnetic fields in the dielectric spacer, as compared with the pure magnetic resonance upon the excitation of the hybridized MPPs, whereas below it, coupling cannot lead to a magnetic field enhancement. We suggest that this feature could offer a feasible way to achieve huge magnetic field enhancement at optical frequencies and hold promising potential applications in magnetic nonlinearity and sensors.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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