Graphene-based photonic crystal to steer giant Faraday rotation
Graphene-based photonic crystal to steer giant Faraday rotation
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DOI：
10.1063/1.4729134
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发表时间：
2012-06
影响因子：
4
通讯作者：
H. Da;C. Qiu
中科院分区：
文献类型：
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作者：
H. Da;C. Qiu
我们提出了一种增强和控制石墨烯法拉第旋转角的石墨烯光子晶体原理图。这个概念是反直觉的，因为巨大的法拉第旋转和高透射率可以同时被宣布，这与之前报道的现有石墨烯结构不同。发现化学势可以通过具有原子厚度的石墨烯产生可控的巨大法拉第旋转。通过设计光子晶体中单个元件的厚度，可以显著提高光子晶体的磁光性能。这在广泛的磁光应用中是至关重要的，因为法拉第旋转只有在透射率相当高的情况下才有意义。
We present a graphene-based photonic-crystal schematic of enhancing and steering Faraday rotation angle of graphene. This concept is counter-intuitive because the giant Faraday rotation and high transmission can be simultaneously pronounced, which is distinguished from exisitng graphene structures reported before. It is found that chemical potential can be tailored to generate a controllable giant Faraday rotation via graphene with atomic thickness. By engineering the individual component thickness in the photonic crystal, the magneto-optical performance can be significantly improved. This is of fundamental importance in a wide range of magneto-optical applications, simply because the Faraday rotation makes sense only when the transmittivity is decently high.