A metamaterial for directive emission -: art. no. 213902

A metamaterial for directive emission -: art. no. 213902
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DOI:
10.1103/physrevlett.89.213902
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发表时间:
2002-11-18
影响因子:
8.6
通讯作者:
Vincent, P
Vincent, P
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Enoch, S;Tayeb, G;Vincent, P

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在本文中,我们给出了超材料发射的首批研究结果。我们展示了金属复合材料的特殊性质如何改变嵌入式光源的发射。我们表明,在适当条件下,嵌入超材料板中的光源所辐射的能量将集中在周围介质的一个窄锥内。在微波频段给出了这种效应的实验演示,所构建的天线具有与基于光子晶体的天线所报道的最佳结果相当的方向性,但使用的是完全不同的物理原理[B. 特梅尔库兰等人,《应用物理杂志》87卷,603页(2000年)]。
In this paper we present the first results on emission in metamaterial. We show how the specific properties of metallic composite material can modify the emission of an embedded source. We show that under proper conditions the energy radiated by a source embedded in a slab of metamaterial will be concentrated in a narrow cone in the surrounding media. An experimental demonstration of this effect is given in the microwave domain, and the constructed antenna has a directivity equivalent to the best reported results with photonic-crystal-based antennas but using a completely different physical principle [B. Temelkuaran et al., J. Appl. Phys. 87, 603 (2000)].