非均匀介质薄膜反射率的角度依赖特性

基于半无限分层介质模型,讨论了具有一定折射率分布的非均匀介质薄膜反射率对入射光的角度依赖关系,得出了其光强反射率公式.在此基础上,通过数值模拟给出不同参数下非均匀介质薄膜的反射率随入射角的变化曲线.分析表明,反射率随入射角的增加呈现出先减小后增大的变化趋势.布儒斯特角随表面折射率、底层折射率、有效深度的增加及膜层厚度减小而增加,随入射波长的变化可以忽略.对于同一入射角,薄膜反射率随薄膜分层厚度增加以及表面折射率、底层折射率和有效深度的减小而减小.

Dependence of Reflectance on Incident Angle in the Inhomogeneous Medium

The dependence relationship of reflectance on incident angle in the inhomogeneous medium with distribution of certain index of refraction is discussed based on the semi-infinite stratified medium model,and the reflectance formula is obtained.Furthermore,the varied curves of reflectance with incident angle in the inhomogeneous medium are simulated under different parameters.The analysis shows that the reflectance decreases firstly,and then increases with the increasing incident angle.Brewster angle increases...