|Title||Photonic band gap of a graphene-embedded quarter-wave stack|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||Fan, YC, Wei, ZY, Li, HQ, Chen, H, Soukoulis, CM|
|Journal||Physical Review B|
|Type of Article||Article|
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 are 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 conductive sheet-induced photonic gaps provide a platform for the enhancement of light-matter interactions.
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