General design method of ultra-broadband perfect absorbers based on magnetic polaritons.

Abstract

Starting from one-dimensional gratings and the theory of magnetic polaritons (MPs), we propose a general design method of ultra-broadband perfect absorbers. Based on the proposed design method, the obtained absorber can keep the spectrum-average absorptance over 99% at normal incidence in a wide range of wavelengths; this work simultaneously reveals the… (More)
DOI: 10.1364/OE.25.00A980

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