Magnetic plasmon induced transparency in three-dimensional metamolecules

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Pin Chieh Wu
  • Wei Ting Chen
  • Kuang-Yu Yang
  • Chih Ting Hsiao
  • Greg Sun
  • Ai Qun Liu
  • Nikolay I. Zheludev

Detail(s)

Original languageEnglish
Pages (from-to)131-138
Journal / PublicationNanophotonics
Volume1
Issue number2
Publication statusPublished - 1 Nov 2012
Externally publishedYes

Abstract

In a laser-driven atomic quantum system, a continuous state couples to a discrete state resulting in quantum interference that provides a transmission peak within a broad absorption profi le the so-called electromagnetically induced transparency (EIT). In the fi eld of plasmonic metamaterials, the subwavelength metallic structures play a role similar to atoms in nature. The interference of their near-fi eld coupling at plasmonic resonance leads to a plasmon induced transparency (PIT) that is analogous to the EIT of atomic systems. A sensitive control of the PIT is crucial to a range of potential applications such as slowing light and biosensor. So far, the PIT phenomena often arise from the electric resonance, such as an electric dipole state coupled to an electric quadrupole state. Here we report the fi rst three-dimensional photonic metamaterial consisting of an array of erected U-shape plasmonic gold nanostructures that exhibits PIT phenomenon with magnetic dipolar interaction between magnetic meta molecules. We further demonstrate using a numerical simulation that the coupling between the different excited pathways at an intermediate resonant wavelength allows for a π phase shift resulting in a destructive interference. A classical RLC circuit was also proposed to explain the coupling effects between the bright and dark modes of EIT-like electromagnetic spectra. This work paves a promising approach to achieve magnetic plasmon devices.

Research Area(s)

  • Magnetic resonance, Metamaterials, Plasmon induced transparency

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

Magnetic plasmon induced transparency in three-dimensional metamolecules. / Wu, Pin Chieh; Chen, Wei Ting; Yang, Kuang-Yu; Hsiao, Chih Ting; Sun, Greg; Liu, Ai Qun; Zheludev, Nikolay I.; Tsai, Din Ping.

In: Nanophotonics, Vol. 1, No. 2, 01.11.2012, p. 131-138.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review