Open AccessSimultaneous large band gaps and localization of electromagnetic and elastic waves in defect-free quasicrystals
Author(s) -
Tianbao Yu,
Zhong Wang,
Wenxing Liu,
Tongbiao Wang,
Nian-Hua Liu,
Qinghua Liao
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.007951
Subject(s) - quasiperiodic function , quasicrystal , photonic crystal , electromagnetic radiation , optics , photonics , band gap , metamaterial , free space , materials science , wave propagation , physics , rod , condensed matter physics , medicine , alternative medicine , pathology
We report numerically large and complete photonic and phononic band gaps that simultaneously exist in eight-fold phoxonic quasicrystals (PhXQCs). PhXQCs can possess simultaneous photonic and phononic band gaps over a wide range of geometric parameters. Abundant localized modes can be achieved in defect-free PhXQCs for all photonic and phononic polarizations. These defect-free localized modes exhibit multiform spatial distributions and can confine simultaneously electromagnetic and elastic waves in a large area, thereby providing rich selectivity and enlarging the interaction space of optical and elastic waves. The simulated results based on finite element method show that quasiperiodic structures formed of both solid rods in air and holes in solid materials can simultaneously confine and tailor electromagnetic and elastic waves; these structures showed advantages over the periodic counterparts.