Negative refraction in a honeycomb-lattice photonic crystal
Data(s) |
2007
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Resumo |
In this paper we theoretically investigate a photonic crystal with dielectric rods in a honeycomb lattice. Two left-handed frequency regions are found in the second and third photonic band by using the plane wave expansion method to analyze the photonic band structure and equifrequency contours. Subwavelength imaging by the photonic crystal flat lens are systematically studied by numerical simulations using the multiple scattering method. Different from the photonic crystals with noncircular dielectric rods in air, this structure is almost isotropic at the optimal frequency for superlensing. As a comparison, flat slab focusing is also demonstrated at other frequencies in the two left-handed regions. (c) 2006 Elsevier Ltd. All rights reserved. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
唐志祥;Zhang Hao;叶云霞;赵楚军;彭润伍;文双春;范滇元.,Solid State Commun.,2007,141(4):183-187 |
Palavras-Chave | #photonic crystal #multiple scattering #left-handed materials |
Tipo |
期刊论文 |