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arXiv · 1311.7037

Photonic band gap of a graphene-embedded quarter-wave stack

Yuancheng Fan·Zeyong Wei·Hongqiang Li·Hong Chen·Costas M. Soukoulis
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Abstract

Here, we present a mechanism for tailoring the photonic band structure of a quarter-wave stack without changing its physical periods by embedding conductive sheets. Graphene is utilized and studied as a realistic, two-dimensional conductive sheet. In a graphene-embedded quarter-wave stack, the synergic actions of Bragg scattering and graphene conductance contributions open photonic gaps at the center of the reduced Brillouin zone, that nonexistent in conventional quarter-wave stacks. Such photonic gaps show giant, loss-independent density of optical states at the fixed lower-gap-edges, of even-multiple characteristic frequency of the quarter-wave stack. The novel conductive sheets induced photonic gaps provide a new platform for the enhancement of light-matter interactions.

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Yuancheng Fan, Zeyong Wei, Hongqiang Li, Hong Chen, Costas M. Soukoulis. 2013-11-27. Photonic band gap of a graphene-embedded quarter-wave stack. https://doi.org/10.1103/physrevb.88.241403

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