Optical properties of split ring resonator metamaterial structures on semiconductor substrates

被引：2
|
作者：
Johnson, Nigel P. [1 ]
Lahiri, Basudev [1 ]
Khokhar, Ali Z. [1 ]
De La Rue, Richard M. [1 ]
McMeekin, Scott
机构：
[1] Univ Glasgow, Dept Elect & Elect Engn, Glasgow G12 8LT, Lanark, Scotland
来源：
METAMATERIALS III | 2008年 / 6987卷
关键词：
split ring resonators; wires; equivalent circuit model; gold; aluminium;
D O I：
10.1117/12.786356
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Metamaterials based on single-layer metallic Split Ring Resonators (SRR) and Wires have been demonstrated to have a resonant response in the near infra-red wavelength range. The use of semiconductor substrates gives the potential for control of the resonant properties of split-ring resonator (SRR) structures by means of active changes in the carrier concentration obtained using either electrical injection or photo-excitation. We examine the influence of extended wires that are either parallel or perpendicular to the gap of the SRRs and report on an equivalent circuit model that provides an accurate method of determining the polarisation dependent resonant response for incident light perpendicular to the surface. Good agreement is obtained for the substantial shift observed in the position of the resonances when the planar metalisation is changed from gold to aluminium.
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页数：8
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