研究了经过尖劈形吸收介质的光束的实折射角, 获得了复折射率实部和虚部与实折射角之间的关系。结果表明, 当已知空气折射率、尖劈形吸收介质的复折射率及顶角时, 则可计算出实折射角。将两束光分别垂直入射到两个具有不同顶角的同材料尖劈形吸收介质中, 测量从斜边出射的该两束光的实折射角, 即可反演得到吸收介质复折射率的实部和虚部。数值模拟结果显示, 当顶角较小时, 实折射角与顶角近似呈线性变化关系; 当顶角较大时, 实折射角随顶角的变化趋于平坦; 在实部相同的情况下, 实折射角的大小随复折射率虚部的增大而减小。

The real refractive angle of light beam through the wedge-shaped absorbing medium is studied, and the relationship between the real refractive angle and the real and imaginary parts of the complex refractive index is obtained. The results show that, when the refractive index of the air, the complex refractive index and the vertex angle of the wedge-shaped absorbing medium are given, the real refractive angle can be calculated. When two light beams enter vertically into two samples with the same material but different vertex angles, respectively, the real and imaginary parts of the complex refractive index of the absorbing medium can be obtained by inversion if the real refractive angles of light exiting from the beveled edge are measured. The numerical simulation results show that, when the vertex angle is relatively small, the real refractive angle has the approximate linear relationship with the vertex angle. When the vertex angle is relatively large, the real refractive angle changes gently with the increase of vertex angle. In the case of the same real parts, the magnitude of the real refractive angle decreases as the imaginary part of the complex refractive index increases.