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Photonic spin Hall effect of reflected light in a prism-graphene waveguide

机译:棱镜-石墨烯波导中反射光的光子自旋霍尔效应

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We derive the photonic spin Hall effect (PSHE) expressions of left-handed circularly polarized (LHCP) and right-handed circularly polarized (RHCP) light from the prism-graphene waveguide structure. The effect of the magnetic field on the PSHE effect is analyzed by using the magneto optical (MO) effect of graphene at the terahertz band. The research shows that due to the existence of graphene, its optical rotation effect will greatly enhance the asymmetric splitting of LHCP and RHCP components. In addition, the incident polarized light frequency and graphene waveguide parameters, such as Fermi level and relaxation time, have very obvious influences on the PSHE shift with MO effect. Thus, the effective modulation of magnetic field to PSHE can be realized at the terahertz band, and it provides a new approach for precision measurement, new sensing and new terahertz band devices.
机译:我们从棱镜-石墨烯波导结构中得出左旋圆偏振(LHCP)和右旋圆偏振(RHCP)光的光子自旋霍尔效应(PSHE)表达式。通过使用太赫兹频段的石墨烯的磁光(MO)效应,分析了磁场对PSHE效应的影响。研究表明,由于石墨烯的存在,其旋光效应将大大增强LHCP和RHCP组分的不对称分裂。此外,入射偏振光频率和石墨烯波导参数(如费米能级和弛豫时间)对具有MO效应的PSHE漂移有非常明显的影响。因此,可以在太赫兹频带上实现磁场对PSHE的有效调制,这为精确测量,新的传感和新的太赫兹频带设备提供了一种新方法。

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