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Focusing slabs made of negative index materials based on inhomogeneous dielectric rods
Author(s) -
Sergentu V. V.,
Ursaki V. V.,
Tiginyanu I. M.,
Foca E.,
Föll H.,
Boyd Robert W.
Publication year - 2006
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.200622120
Subject(s) - rod , dielectric , refractive index , photonic crystal , materials science , optics , scattering , light scattering , lattice (music) , optoelectronics , physics , medicine , alternative medicine , pathology , acoustics
We show the advantages of using inhomogeneous dielectric rods to design photonic crystals that behave as materials with negative refractive index. We found that the analysis of light scattering properties of inhomogeneous dielectric rods allows one to estimate the interval of frequencies where a photonic crystal exhibits negative refractive index. A triangular‐lattice photonic crystal – assembled from multilayer dielectric rods designed to approximate a fish‐eye profile – is shown to exhibit negative refractive index and good focusing properties at frequencies where the fish‐eye dielectric rods scatter the light like a medium with negative refractive index. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)