Electromagnetic Bloch-like oscillations in one-dimensional quasicrystal consisting of negative permeability metamaterial
State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen (Zhongshan) University - Guangzhou 510275, China
Accepted: 20 June 2011
Electromagnetic oscillations have been investigated in one-dimensional quasicrystal constructed by dielectric and negative permeability multilayers. Bloch-like oscillations are found in either double-period or Fibonacci quasiperiodic structure, even when no thickness gradient is introduced in the dielectric layer. The average temporal periodicity of the oscillation can be predicted by frequency spectrum with either a Wannier-Stark ladder profile or with a particular profile. Various characteristics are studied, such as electric field pattern of the scattering states and transmission behaviors in both frequency and temporal domain.
PACS: 61.44.Br – Quasicrystals / 78.67.Pt – Multilayers; superlattices; photonic structures; metamaterials
© EPLA, 2011