Resonance modes of plasmonic nanorod metamaterials and their applications

Abstract

Plasmonic nanorod metamaterials exhibit transversal and longitudinal resonance modes. It is found that the resonance intensity of the transversal modes (T-Modes) excited by the p- polarized wave is obviously larger than the intensity for the s- polarized wave at the wavelength of the transversal resonance, and the resonance intensity of the longitudinal modes (L-Modes) excited by the s- polarized wave is clearly larger than the intensity for the p- polarized wave at the longitudinal resonance wavelength, indicating a distinct polarization characteristics, which results from excitation of the different resonance modes of surface plasmons at different wavelengths. Moreover, the polarization behavior in near field regions for the different resonance modes has been demonstrated by the electric field distributions of the plasmonic nanorods based on FDTD simulation. In addition, the working wavelength of the polarizer can be tuned by the diameter and length of the silver nanorods in the visible spectral range, higher extinction ratios and lower insertion losses can be achieved based on the different resonance modes associated with the different polarizations. The polarizers will be a promising candidate for its potential applications in integration of nanophotonic devices.

Publication DOI: https://doi.org/10.1117/12.2547790
Divisions: Engineering & Applied Sciences > Aston Institute of Photonics Technology
Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences
Additional Information: Copyright 2019 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Uncontrolled Keywords: L-Mode,Plasmonic nanorod metamaterial,Polarizer,Resonance mode,T-Mode,Electronic, Optical and Magnetic Materials,Condensed Matter Physics,Computer Science Applications,Applied Mathematics,Electrical and Electronic Engineering
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.spi ... 7790.full?SSO=1 (Publisher URL)
PURE Output Type: Conference article
Published Date: 2019-12-18
Accepted Date: 2019-07-01
Authors: Zhang, Junxi
Hu, Zhijia ( 0000-0002-8960-5318)
Xie, Kang
Wei, Yongqin
Wang, Haoyu
Wang, Fei
Liang, Taiming
Ghafoor, Sonia
Wang, Pei
Fei, Guangtao
Zhang, Lide
Zhang, Lin ( 0000-0002-1691-5577)

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