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用折射率不同,有效光学厚度相等的二层(ZnS和MgF_2)作为多层膜的基本周期,用这样的无损耗周期多层介质膜制作的激光反射镜,计算了阻带中心的反射率与阻带宽度。而这二者都是入射角的函数。在斜入射时辐射偏振垂直于或平行于入射面。对于直到有二十层膜的反射镜的计算机计算结果被列成图表,并作了详细讨论。这些图表按预定的要求简化激光反射镜的设计,并且造成了一种可能性:即区分阻带中心处的谱线反射率是极大值还是极小值。
Using the two layers (ZnS and MgF_2) with different refractive index and effective optical thickness as the basic period of the multi-layer film, the reflectivity at the stopband center and Stopband width. Both of these are functions of angle of incidence. The radiation polarization is perpendicular to or parallel to the incident surface at oblique incidence. Computer calculations for mirrors up to twenty layers of film were tabulated and discussed in detail. These charts simplify the design of the laser mirror to meet predetermined requirements and create the possibility of distinguishing spectral line reflectivities at the stopband center from the maximum or the minimum.