Journal
NANOPHOTONICS
Volume 1, Issue 2, Pages 131-138Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2012-0019
Keywords
metamaterials; plasmon induced transparency; magnetic resonance
Categories
Funding
- National Taiwan University, National Science Council [100-2923-M-002-007-MY3, 101-3113-P-002-021, 101-2112-M-002-023]
- EPSRC, UK
- Royal Society, London
- National Center for Theoretical Sciences
- Molecular Imaging Center of National Taiwan University
- National Center for High-Performance Computing, Taiwan
- Taipei Office
- Engineering and Physical Sciences Research Council [EP/G060363/1] Funding Source: researchfish
- EPSRC [EP/G060363/1] Funding Source: UKRI
Ask authors/readers for more resources
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 profile the so-called electromagnetically induced transparency (EIT). In the field of plasmonic metamaterials, the subwavelength metallic structures play a role similar to atoms in nature. The interference of their near-field 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 first 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 p 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available