Resonance modes of plasmonic nanorod metamaterials and their applications

Junxi Zhang; Zhijia Hu; Kang Xie; Yongqin Wei; Haoyu Wang; Fei Wang; Taiming Liang; Sonia Ghafoor; Pei Wang; Guangtao Fei; Lide Zhang; Lin Zhang

doi:10.1117/12.2547790

18 December 2019 Resonance modes of plasmonic nanorod metamaterials and their applications

Junxi Zhang, Zhijia Hu, Kang Xie, Yongqin Wei, Haoyu Wang, Fei Wang, Taiming Liang, Sonia Ghafoor, Pei Wang, Guangtao Fei, Lide Zhang, Lin Zhang

Author Affiliations +

Proceedings Volume 11336, AOPC 2019: Nanophotonics; 113360P (2019) https://doi.org/10.1117/12.2547790
Event: Applied Optics and Photonics China (AOPC2019), 2019, Beijing, China

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.

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Junxi Zhang, Zhijia Hu, Kang Xie, Yongqin Wei, Haoyu Wang, Fei Wang, Taiming Liang, Sonia Ghafoor, Pei Wang, Guangtao Fei, Lide Zhang, and Lin Zhang "Resonance modes of plasmonic nanorod metamaterials and their applications", Proc. SPIE 11336, AOPC 2019: Nanophotonics, 113360P (18 December 2019); https://doi.org/10.1117/12.2547790

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