Open AccessNon-near-field focus and imaging of an unpolarized electromagnetic wave through high-symmetry quasicrystals
Author(s) -
Xiangdong Zhang,
Zhiyuan Li,
Bingying Cheng,
Daozhong Zhang
Publication year - 2007
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.15.001292
Subject(s) - physics , optics , quasicrystal , focus (optics) , negative refraction , electromagnetic radiation , symmetry (geometry) , rotational symmetry , metamaterial , electromagnetic field , scattering , photonic crystal , refraction , near and far field , geometry , condensed matter physics , quantum mechanics , mathematics , mechanics
The focus behaviors of electromagnetic wave through two-dimensional (2D) high-symmetry photonic quasicrystals (PQCs) have been investigated by using exact multi-scattering numerical simulation. We have found that the high-symmetry PQC flat lenses possess universal feature for non-near-field focus of two kinds of polarized waves. That is to say, the non-near-field focus for two kinds of polarized waves can be realized by using these flat lenses, which are consisting of 12-fold, 10-fold and 8-fold 2D PQCs with the same structures and parameters. Such a superior feature originates from higher rotational symmetry and negative refraction in the PQCs. Thus, potential applications of such a phenomenon to optical devices can be anticipated.