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Negative refraction in a dielectric rod superlattice
Author(s) -
Saado Y.,
NeveOz Y.,
Golosovsky M.,
Davidov D.,
Frenkel A.
Publication year - 2007
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200674512
Subject(s) - superlattice , negative refraction , stopband , prism , optics , refractive index , refraction , photonic crystal , dielectric , electric field , materials science , microwave , phase velocity , planar , reflection (computer programming) , transmission (telecommunications) , phase (matter) , condensed matter physics , optoelectronics , physics , band pass filter , computer graphics (images) , electrical engineering , quantum mechanics , computer science , programming language , engineering
We studied microwave transmission, reflection, and refraction from a planar superlattice consisting of dielectric rods with two different diameters. This structural modulation results in a narrow transmission band inside the first photonic stopband. Band structure simulations indicate that this transmission band exhibits a negative phase velocity. We performed electric field mapping inside our superlattice, which revealed a negative phase velocity. In another setup we built a prism and studied transmission through it. We observed negative refraction, as expected for material with a negative refraction index. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)