High transmission in a metal-based photonic crystal
High transmission in a metal-based photonic crystal
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DOI：
10.1063/1.5006595
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发表时间：
2018-01
影响因子：
4
通讯作者：
Ying Chen;Huanyang Chen;G. Cai
中科院分区：
文献类型：
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作者：
Ying Chen;Huanyang Chen;G. Cai
提出了一种具有环形空气腔的金属基光子晶体。该系统的单胞可以模拟为二维有限量子阱，这使得PC系统更接近于描述原子晶体的类似物理过程。通过调节空气环的填充率，我们发现了单极和偶极态（或类似地，量子力学中的s和p态）之间的能带反转。存在一个偶然简并的过渡系统，在那里可以得到一个Dirac-like锥。这样的设计可以用于在体金属中实现在类狄拉克点的频率附近的高透射。数值模拟研究了这种金属系统的波输运行为。
We propose metal-based photonic crystals (PCs) with annular air cavities. The unit cell could be analogue to a two-dimensional finite quantum well, which makes the PC system closely describe the similar physics of atomic crystals. By tuning the filling ratio of air annuluses, we discover a band inversion between monopolar and dipolar states (or similarly, the s and p states in quantum mechanics). There is a transition system of accidental degeneracy, where a Dirac-like cone could be achieved. Such design could be used to implement high transmission in a bulk metal near the frequency of the Dirac-like point. Numerical simulations are performed to investigate the wave transport behaviors of such a metallic system.