Impact of material characteristics on the general optical behavior of perforated surface plasmon system

Alireza Shabani, Neda Rahmani and Mehdi Khazaei Nezhad

Journal of Electromagnetic Waves and Applications, 2020, vol. 34, issue 10, 1372-1385

Abstract: In this paper, we studied the impact of material characteristics on the optical response of a perforated surface plasmon system as a general trend by employing dielectric function of metallic film. To this end, different artificial materials were modeled based on a single interband transition peak in the form of a Lorentzian function in the imaginary part of dielectric function ${\varepsilon _2} $ε2 as well as a Drude term for free electron feature. The impact of place, strength and broadening of interband peak of metallic film were evaluated on the optical transmission spectrum. Our results revealed that these peaks affect the excited modes in the form of a decrease in the intensity of transmitted beam at corresponding frequencies. This decrease was proportional to the strength and width of the peak, and interpreted as an optical dissipation coming from material specifics. The present study provides a better insight into how the optical transmission response of such systems can be tuned for a particular goal or application using material characteristics.

Date: 2020
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DOI: 10.1080/09205071.2019.1654931

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