2011/02/26 by Priya Rose, Rose, Priya, Emiliano Di Gennaro +5
Materials Science · Physics and Astronomy · #Quasicrystal Structures and Properties #Optical and Acousto-Optic Technologies #Photonic Crystals and Applications
paper · pdf · doi:10.48550/arxiv.1102.5406
We report on the formation and development of the photonic band gap in two-dimensional 8-, 10- and 12-fold symmetry quasicrystalline lattices of low index contrast. Finite size structures made of dielectric cylindrical rods were studied and measured in the microwave region, and their properties compared with a conventional hexagonal crystal. Band gap characteristics were investigated by changing the direction of propagation of the incident beam inside the crystal. Various angles of incidence from 0 ° to 30° were used in order to investigate the isotropic nature of the band gap. The arbitrarily high rotational symmetry of aperiodically ordered structures could be practically exploited to manufacture isotropic band gap materials, which are perfectly suitable for hosting waveguides or cavities.