Negative refractions in uniaxially anisotropic chiral media
Negative refractions in uniaxially anisotropic chiral media
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DOI：
10.1103/physrevb.73.113104
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发表时间：
2006-03-01
影响因子：
3.7
通讯作者：
Cui, TJ
中科院分区：
文献类型：
--
作者：
Cheng, Q;Cui, TJ
单轴各向异性手征介质是一种很容易人工实现的介质，其手征性只在一个方向上出现。在这篇报告中，我们研究了平面波从自由空间入射到这种单轴手征介质的折射特性。我们证明了在一个或两个本征波中同时或分别发生不同的负相位或负群折射。因此，单轴手征介质可以比各向同性手征介质和左手材料支持更多种类的负折射。在单轴手征方案中，实现负折射的条件可以相当宽松。
Uniaxially anisotropic chiral media are quite easy to be realized artificially, where the chirality appears only in one direction. In this report, we investigate the refractive properties of a plane wave incident from free space to such uniaxially chiral media. We show that different negative phase or group refractions occur in one or two eigenwaves simultaneously or separately. Hence, the uniaxially chiral media may support more kinds of negative refractions than isotropic chiral media and the left-handed materials. In the uniaxially chiral proposal, the condition to realize the negative refraction can be quite loose.