Magneto-Optical Modulation of Photonic Spin Hall Effect of Graphene in Terahertz Region
Magneto-Optical Modulation of Photonic Spin Hall Effect of Graphene in Terahertz Region
复制标题
太赫兹区域石墨烯光子自旋霍尔效应的磁光调制
DOI：
10.1002/adom.201701212
复制
发表时间：
2018-04-05
影响因子：
9
通讯作者：
Yao, Jianquan
中科院分区：
文献类型：
--
作者：
Tang, Tingting;Li, Jie;Yao, Jianquan
提出了石墨烯-衬底体系中透射光的光子自旋霍尔效应（PSHE）的磁光调制。基于角谱分析，推导了左旋圆偏振（LHCP）和右旋圆偏振（RHCP）分量的PSHE位移表达式。在模拟结果的基础上，详细讨论了石墨烯在不同弛豫时间和费米能量下的PSHE位移及其物理机制。提出并讨论了mo调制PSHE在多通道开关和条码加密方面的潜在应用。石墨烯衬底体系中mo调制的PSHE为实现太赫兹区域的光子器件提供了一种新的机制。
Magneto-optical (MO) modulation of the photonic spin Hall effect (PSHE) of transmitted light in graphene-substrate system in terahertz region is proposed. The expressions for PSHE shifts of left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) components are derived based on angular spectrum analysis. PSHE shifts and their physical mechanisms are discussed in detail in the presence of different relaxation time and Fermi energy of graphene based on simulation results. The potential applications of MO-modulated PSHE in multichannel switch and barcode encryption are also proposed and discussed. The MO-modulated PSHE in graphene-substrate system provides a new mechanism to realize photonic devices in the terahertz region.