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Ultra-broad Flat Band Light Absorber Based on Multi-sized Slow-wave Hyperbolic Metamaterial Thin-films

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Abstract

We realize a broadband absorber by using a hyperbolic metamaterial composed of alternating aluminum-alumina thin films based on superposition of multiple slow-wave modes. Our super absorber ensures broadband and polarization-insensitive light absorption over almost the entire solar spectrum and near-infrared regime.

© 2015 Optical Society of America

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