Open AccessNegative refraction can make non-diffracting beams
Author(s) -
M. A. Kaliteevski,
S. Brand,
R. A. Abram,
Andrew J. Gallant,
J.M. Chamberlain
Publication year - 2008
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.16.014582
Subject(s) - optics , terahertz radiation , refraction , negative refraction , slab , beam (structure) , refractive index , terahertz spectroscopy and technology , physics , rod , hexagonal crystal system , light beam , medicine , chemistry , alternative medicine , pathology , geophysics , crystallography
We report the results of simulations relating to the illumination of a structure consisting of a slab constructed from a 2-D hexagonal array of metal rods with a terahertz frequency source. As a consequence of negative refraction an essentially non-divergent beam pattern is observed. Although the results presented relate to the terahertz regime they should also be applicable at other frequencies.