Multispectral Plasmon Induced Transparency in Coupled Meta-Atoms

Electrical and Computer Engineering Department, Boston University, Boston, Massachusetts 02215, United States.
Nano Letters (Impact Factor: 12.94). 03/2011; 11(4):1685-9. DOI: 10.1021/nl200197j
Source: PubMed

ABSTRACT We introduce an approach enabling construction of a scalable metamaterial media supporting multispectral plasmon induced transparency. The composite multilayered media consist of coupled meta-atoms with radiant and subradiant hybridized plasmonic modes interacting through the structural asymmetry. A perturbative model incorporating hybridization and mode coupling is introduced to explain the observed novel spectral features. The proposed scheme is demonstrated experimentally by developing a lift-off-free fabrication scheme that can automatically register multiple metamaterial layers in the transverse plane. This metamaterial which can simultaneously enhance nonlinear processes at multiple frequency domains could open up new possibilities in optical information processing.

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