Experimental demonstration of subwavelength focusing of electromagnetic waves by labyrinth-based two-dimensional metamaterials

被引：20
|
作者：
Bulu, I [1 ]
Caglayan, H
Ozbay, E
机构：
[1] Bilkent Univ, Dept Phys, TR-06800 Ankara, Turkey
[2] Bilkent Univ, Nanotechnol Res Ctr, TR-06800 Ankara, Turkey
来源：
OPTICS LETTERS | 2006年 / 31卷 / 06期
关键词：
D O I：
10.1364/OL.31.000814
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We studied focusing in a two-dimensional metamaterial that was based on a labyrinth structure. We theoretically showed that the labyrinth-based metamaterial exhibits negative indices of refraction between 6 and 6.4 GlIz. We experimentally studied the focusing effect by measuring electric field intensities on the output side of the metamaterial when the source was placed in front of the input side of the metamaterial. Our experimental results showed that it is in fact possible to focus the source field with half-widths as small as lambda/4 by using the labyrinth-based metamaterial. (c) 2006 Optical Society of America.
引用
收藏
页码：814 / 816
页数：3
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