This paper provides an analytic method to study propagation characteristics of a linearly polarized Bessel vortex beam through a homogeneous magnetized plasma slab. The incident Bessel vortex beam, as well as the reflected, transmitted and internal fields are expanded in terms of cylindrical vector wave functions (CVWFs). The effects of plasma thickness, electron density and magnetic induction strength on the contour profiles of the reflected and transmitted beams and orbital angular momentum (OAM) spectra are analyzed and discussed in detail. In particular, the magnetic induction strength has a significant impact on the polarization of the transmitted beam, but not on OAM state distribution. The channel capacity of THz OAM multiplexing decreases with an increase of plasma thickness and electron density.

本文提供了一种分析方法来研究线性偏振贝塞尔涡旋光束通过均匀磁化等离子板的传播特性。入射贝塞尔涡旋光束，以及反射、透射和内部场在柱面矢量波函数 (CVWF) 方面进行了扩展。详细分析和讨论了等离子体厚度、电子密度和磁感应强度对反射和透射光束的轮廓以及轨道角动量 (OAM) 光谱的影响。特别是，磁感应强度对透射光束的极化有显着影响，但对 OAM 状态分布没有影响。THz OAM复用的通道容量随着等离子体厚度和电子密度的增加而减小。