Broadband polarization-independent absorber based on multilayered metamaterial

I. L. Gomes de Souza; V. F. Rodriguez-Esquerre

doi:10.1117/12.2323205

19 September 2018 Broadband polarization-independent absorber based on multilayered metamaterial

I. L. Gomes de Souza, V. F. Rodriguez-Esquerre

Proceedings Volume 10722, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI; 1072230 (2018) https://doi.org/10.1117/12.2323205
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

We proposed a broadband absorber based in rectangular metallic and dielectric grating. The geometric parameters of the proposed structure were optimized to exhibits strong absorption (above 90% for incidence normal) with polarization-independent in the visible spectrum (400-700nm). The proposed structure has demonstrated wide-angle absorption of above 80% for angles of incidence of up to 60° for TM mode and up to 40° for TE mode. The high absorption does not change when we vary other geometric parameters of the structure to analyze the fabrication tolerance.

Citation Download Citation

I. L. Gomes de Souza and V. F. Rodriguez-Esquerre "Broadband polarization-independent absorber based on multilayered metamaterial", Proc. SPIE 10722, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XVI, 1072230 (19 September 2018); https://doi.org/10.1117/12.2323205

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KEYWORDS

Absorption

Metals

Dielectric polarization

Dielectrics

Metamaterials

Refractive index

Visible radiation

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