Physical nature of anomalous optical transmission of thin absorptive corrugated films |
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Authors: | N L Dmitruk and A V Korovin |
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Institution: | (1) Institute for Physics Semiconductors, NAS Ukraine, Kiev, Ukraine |
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Abstract: | 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 performed in the framework of modified differential
formalism method. Numerical results obtained for noble metals (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.
The article is published in the original. |
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