Narrowband polarization-dependent fractal based plasmonic absorbers

Igor Leonardo Gomes de Souza; Vitaly Felix Rodriguez-Esquerre

doi:10.1117/12.2529249

9 September 2019 Narrowband polarization-dependent fractal based plasmonic absorbers

Igor Leonardo Gomes de Souza, Vitaly Felix Rodriguez-Esquerre

Proceedings Volume 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII; 110822C (2019) https://doi.org/10.1117/12.2529249
Event: SPIE Nanoscience + Engineering, 2019, San Diego, California, United States

Abstract

We propose a narrowband plasmonic absorber based on 3D fractal geometries. The geometric parameters of the proposed structure were optimized to exhibit strong absorption (above 90% for normal incidence) for transverse magnetic polarization in the region of electromagnetic spectrum used in optical communications (1.0 - 2.0 μm). The proposed structure demonstrated that the resonant peaks can be tunned with the geometric parameters of the structure. We also analyzed the dependence of thickness and effects of fractal rotation to analyze fabrication tolerance.

Citation Download Citation

Igor Leonardo Gomes de Souza and Vitaly Felix Rodriguez-Esquerre "Narrowband polarization-dependent fractal based plasmonic absorbers", Proc. SPIE 11082, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVII, 110822C (9 September 2019); https://doi.org/10.1117/12.2529249

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