Open AccessPhotonic crystal digital alloys and their band structure properties
Author(s) -
Jeongkug Lee,
Donguk Kim,
Heonsu Jeon
Publication year - 2011
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.19.019255
Subject(s) - photonic crystal , materials science , diamond cubic , optics , band gap , stacking , alloy , diamond , microwave , photonics , lattice (music) , electronic band structure , optoelectronics , condensed matter physics , physics , composite material , nuclear magnetic resonance , quantum mechanics , acoustics
We investigated semi-disordered photonic crystals (PCs), digital alloys, and made thorough comparisons with their counterparts, random alloys. A set of diamond lattice PC digital alloys operating in a microwave regime were prepared by alternately stacking two kinds of sub-PC systems composed of alumina and silica spheres of the same size. Measured transmission spectra as well as calculated band structures revealed that when the digital alloy period is short, band-gaps of the digital alloys are practically the same as those of the random alloys. This study indicates that the concept of digital alloys holds for photons in PCs as well.