Open AccessSimultaneous localization of photons and phonons within the transparency bands of LiNbO_3 phoxonic quasicrystals
Author(s) -
Zhong Wang,
Wenxing Liu,
Tianbao Yu,
Tongbiao Wang,
Haoming Li,
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.24.023353
Subject(s) - quasiperiodic function , lithium niobate , quasicrystal , optics , photonic crystal , photon , materials science , refractive index , photonics , band gap , phonon , physics , optoelectronics , condensed matter physics
We report the properties of dual phononic-photonic band gaps and localized modes of eightfold lithium niobate (LiNbO 3 ) phoxonic quasicrystals (PhXQCs). Complete and large phoxonic band gaps are easily achieved despite the low refractive index of LiNbO 3 substrate. Point defect intentionally introduced can form localized modes within both forbidden and transparency bands over a wide range of geometric parameters. Further analysis indicates that the localized modes within transparency bands originate from the intrinsic high-order rotational symmetry of quasiperiodic structures, which resemble whispering gallery modes. LiNbO 3 PhXQCs provide a good candidate to enhance phononic-photonic interaction and show considerable advantage over the periodic counterparts.