Open AccessSelf-guiding in two-dimensional photonic crystals
Author(s) -
Dmitry N. Chigrin,
Stefan Enoch,
C. M. Sotomayor Torres,
Gérard Tayeb
Publication year - 2003
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.11.001203
Subject(s) - optics , photonic crystal , brillouin zone , dispersion (optics) , diffraction , light beam , curvature , anisotropy , negative refraction , beam (structure) , refractive index , physics , materials science , geometry , mathematics
Dielectric periodic media can possess a complex photonic band structure with allowed bands displaying strong dispersion and anisotropy. We show that for some frequencies the form of iso-frequency contours mimics the form of the first Brillouin zone of the crystal. A wide angular range of flat dispersion exists for such frequencies. The regions of iso-frequency contours with near-zero curvature cancel out diffraction of the light beam, leading to a self-guided beam.