超材料中真正左手传输峰的实验观察

Experimental observation of true left-handed transmission peaks in metamaterials.

作者信息

Aydin Koray, Guven Kaan, Kafesaki Maria, Zhang Lei, Soukoulis Costas M, Ozbay Ekmel

机构信息

Department of Physics, Bilkent University, Bilkent 06800, Ankara, Turkey.

出版信息

Opt Lett. 2004 Nov 15;29(22):2623-5. doi: 10.1364/ol.29.002623.

DOI:10.1364/ol.29.002623

PMID:15552665

Abstract

We report true left-handed (LH) behavior in a composite metamaterial consisting of a periodically arranged split ring resonator (SRR) and wire structures. We demonstrate the magnetic resonance of the SRR structure by comparing the transmission spectra of SRRs with those of closed SRRs. We have confirmed experimentally that the effective plasma frequency of the LH material composed of SRRs and wires is lower than the plasma frequency of the wires. A well-defined LH transmission band with a peak value of -1.2 dB (-0.3 dB/cm) was obtained. The experimental results agree extremely well with the theoretical calculations.

摘要

我们报道了在一种由周期性排列的开口环谐振器（SRR）和金属线结构组成的复合超材料中出现的真正左手性（LH）行为。通过比较SRR与闭合SRR的透射谱，我们展示了SRR结构的磁共振。我们通过实验证实，由SRR和金属线组成的左手性材料的有效等离子体频率低于金属线的等离子体频率。获得了一个定义明确的左手性传输带，其峰值为-1.2 dB（-0.3 dB/cm）。实验结果与理论计算非常吻合。