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arXiv · 1109.5710

Design of Metamaterial Surfaces with Broad-band Absorbance

Chihhui Wu·Gennady Shvets
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Abstract

A simple design paradigm for making broad-band ultra-thin plasmonic absorbers is introduced. The absorber's unit cell is composed of sub-units of various sizes, resulting in nearly 100% absorbance at multiple adjacent frequencies and high absorbance over a broad frequency range. A simple theoretical model for designing broad-band absorbers is presented. It uses a single-resonance model to describe the optical response of each sub-unit and employs the series circuit model to predict the overall response. Validity of the circuit model relies on short propagation lengths of the surface plasmons.

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Chihhui Wu, Gennady Shvets. 2011-09-26. Design of Metamaterial Surfaces with Broad-band Absorbance. https://doi.org/10.1364/ol.37.000308

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