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Light propagation
in layered photonic crystals with admixture layers
Rumyantsev V.V., Fedorov S.A., Gumennyk K.V.
A.A. Galkin Donetsk Physico-Technical Institute of NASU,
72 R. Luxembourg St., 83114 Donetsk, Ukraine
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The virtual-crystal approximation is used for numerical simulation of
a polariton spectrum transformation in composite materials, consisting
of alternating silicon and liquid crystal layers and randomly included
admixture layers. The character of dependence of the bandgap width and
the refractive index upon the concentra-tion of admixture layers is discussed.
It is shown that the energy structure of this imperfect superlattice can
be significantly altered by implantation of appropriate defect layers.
Keywords: photonic crystal, Si - liquid crystal
system, admixture layer, bandgap width.
PACS: 78.55.Et
UDC: 535.37
Ukr. J. Phys. Opt.
9 97-104
doi: 10.3116/16091833/9/2/97/2008
Received: 29.01.2008 |
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