旋转等离子体中增强的可调谐旋光功率
Enhanced Tuneable Rotatory Power in a Rotating Plasma
摘要：
解析地导出了旋转磁化等离子体的旋向性。机械旋转导致波沿磁场传播的一个新的截止，并且在该截止之上的偏振旋转是经典磁光法拉第效应和机械光偏振拖曳的总和。利用非常大的有效群指数附近的截止，我们在这里曝光，第一次，极化阻力可以$10^4$大于法拉第旋转GHz频率。旋转导致弱吸收，同时允许直接频率控制，展示了旋转等离子体对于非互易元素的独特潜力。稠密的非中性等离子体的非常大的旋转频率可以在太赫兹区域实现前所未有的陀螺效应。
英文摘要：
The gyrotropic properties of a rotating magnetized plasma are derived analytically. Mechanical rotation leads to a new cutoff for wave propagation along the magnetic field and polarization rotation above this cutoff is the sum of the classical magneto-optical Faraday effect and the mechanico-optical polarization drag. Exploiting the very large effective group index near the cutoff, we expose here, for the first time, that polarization drag can be $10^4$ larger than Faraday rotation at GHz frequency. The rotation leads to weak absorption while allowing direct frequency control, demonstrating the unique potential of rotating plasmas for non-reciprocal elements. The very large rotation frequency of a dense non-neutral plasma could enable unprecedented gyrotropy in the THz regime.
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