25 August 2017 Polarization-independent multi-peak plasmonic absorber
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Abstract
A multipeak polarization independent absorber based on ultrathin metamaterials composed of metal layers (Al) and dielectric (polymer, ZnSe) has been proposed and numerically analyzed. The absorber is composed by a trapezoidal shaped grating filled by a polymer. This structure possess resonant absorption modes at multi-frequencies. Numerical results show that near unity absorption peaks can be obtained for both polarization modes (TM and TE) for visible radiation at normal incidence.
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I. L. Gomes de Souza, V. F. Rodriguez-Esquerre, "Polarization-independent multi-peak plasmonic absorber", Proc. SPIE 10346, Plasmonics: Design, Materials, Fabrication, Characterization, and Applications XV, 103462J (25 August 2017); doi: 10.1117/12.2273382; https://doi.org/10.1117/12.2273382
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