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Physical Nature of Anomalous Optical Transmission of Thin Absorptive Corrugated Films

机译:吸收性瓦楞薄膜的反常光学透射的物理性质

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摘要

The enhancement of p-polarized light transmittance through periodically relief thin absorptive film on dielectric or semiconductor substrate was considered theoretically. The calculation of transmittance/reflectance was per_formed in the framework of modified differential formalism method. Numerical results obtained for noble met_als (Au, Ag and Cu) under arbitrary relief correlation between two sides of film allow ascertaining physical nature of surface electromagnetic fields responsible for the enhancement transmittance effect. These are Fano, Zenneck-Sommerfeld and Brewster modes on the interfaces with absorbing medium. For anticorrelated reliefs of opposite film surfaces the bound of their modes was found especially effective.
机译:理论上考虑了通过周期性地浮雕介电或半导体衬底上的吸收薄膜来提高p偏振光的透射率。透射率/反射率的计算是在改进的微分形式主义方法的框架内进行的。在膜的两侧之间具有任意浮雕关系的情况下获得的贵金属(Au,Ag和Cu)的数值结果可以确定负责增强透射率效应的表面电磁场的物理性质。这些是吸收介质界面上的Fano,Zenneck-Sommerfeld和Brewster模式。对于相对膜表面的反相关浮雕,发现其模态的边界特别有效。

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