Analysis of wave focusing inside a negative-index photonic-crystal slab

被引：19
|
作者：
Martínez, A [1 ]
Martí, J [1 ]
机构：
[1] Univ Politecn Valencia, Valencia Nanophoton Technol Ctr, Valencia 46022, Spain
来源：
OPTICS EXPRESS | 2005年 / 13卷 / 08期
关键词：
D O I：
10.1364/OPEX.13.002858
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We analyze focusing of electromagnetic waves inside a photonic crystal slab by means of finite-difference time-domain simulations. At the frequency of the source, the photonic crystal behaves as an effective medium with an effective index of refraction of -1. Despite of the strong Bloch modulation of the field inside the slab, the presence of a well-definite internal focus is evident. The dimensions of the internal focus are similar to those of the external focus. The effect of the frequency of the wave on the focusing is also discussed. (C) 2005 Optical Society of America.
引用
收藏
页码：2858 / 2868
页数：11
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