前言当光束倾斜入射时,多层干涉薄膜显示出强烈的偏振效应。这是要求电矢量和磁矢量在每一膜层界面上切向分量均连续的结果。对于 S 偏振,电矢最垂直于入射面;而对于 P 偏振,电矢量在入射面内。多层膜任一点上的光学导纳被定义为在那一点上磁矢量和电矢量切向分量的比值 INTRODUCTION Multilayer interference films show a strong polarization effect when the light beam is obliquely incident. This is the result of the continuity of the tangential components of the electrical and magnetic vectors at the interface of each layer. For S-polarization, the electric vector is most perpendicular to the incident surface; and for P-polarization, the electric vector is in the plane of incidence. The optical admittance at any point of the multilayer film is defined as the ratio of the tangential component of the magnetic vector to the electrical vector at that point