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arXiv · 0903.2075

Different mechanisms for efficient optical transmission through bilayered subwavelength patterned metal films

Jian Wang·Yong Zeng·Xiaoshuang Chen·Wei Lu·Jerome V. Moloney
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Abstract

Light transmission through bilayered thin metal films perforated with subwavelength hole arrays are numerically studied based on a full-vector finite-difference time-domain approach. A variety of transmission peaks originating from different physical mechanisms are observed. In addition to the direct tunnelling and Fabry-P\`{e}rot resonances, generally possessed by idealized bilayered dielectric slabs, the near-field localized plasmon polaritons also play important roles. They not only influence the direct tunnelling in a destructive or constructive way, the interactions between these localized plasmon polaritons on different metal films also result in additional channels which transfer optical energy effectively.

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Jian Wang, Yong Zeng, Xiaoshuang Chen, Wei Lu, Jerome V. Moloney. 2009-03-11. Different mechanisms for efficient optical transmission through bilayered subwavelength patterned metal films. https://doi.org/10.1364/josab.26.0000b7

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