非均匀S偏振电磁波在导电媒质界面的反射系数曲线

The curve of reflection coefficient of nonuniform S-polarized electromagnetic wave at the interface of conductive media

(1.中国科学院地质与地球物理研究所,北京 100029;2.北京印刷学院,北京大兴 102600)

（1 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China，2 Beijing Institute of Graphic Communication, Beijing, 102600, China ）

基于非均匀电磁波在导电媒质中传播时其相移常数方向和振幅衰减常数方向的不一致性，利用电磁波在导电媒质界面的边界条件给出了非均匀S偏振电磁波的反射系数，并计算了反射系数随入射角的变化曲线。曲线显示当电磁波由电导率大的介质向电导率小的介质传播时，将发生类全反射。在相移常数临界角和衰减常数临界角附近存在2个峰值，且反射系数的数值小于1，这一结果与全反射光的结果明显不同。

Based on the difference between directions of phase shift constant and attenuation constant when nonuniform electromagnetic wave travels in conductive medium, and using the boundary conditions of electromagnetic wave at the interface of conductive media, we derived the reflection coefficients of nonuniform S-polarized electromagnetic wave, and analyzed the variations of reflection coefficients with incident angles. It is showed that quasi-total reflection would occur when the electromagnetic wave traveled from medium with greater conductivity into medium with smaller conductivity. There were two peaks near the critical angles of phase shift constant and attenuation constant, and the reflection coefficient is smaller than 1. This conclusion is greatly different from that obtainal total reflection light.