Title :
Metamaterials for ultra-broadband super absorbers based on plasmon hybridization
Author :
Lobet, M. ; Henrard, L.
Author_Institution :
Dept. of Phys., Univ. of Namur, Namur, Belgium
Abstract :
We propose metamaterial super absorbers that efficiently absorb incoming radiation over an operational bandwidth ranging from 0.20-5.99 μm with an integrated absorption as high as 97.1%. A periodic array of pyramidal metal-dielectric (Au/Si) layers acts as broadband coupled plasmonic resonators. Plasmon hybridization of dipolar modes is shown to be the prominent mechanism in broadband absorption.
Keywords :
electromagnetic metamaterials; electromagnetic wave absorption; plasmonics; resonators; broadband absorption; broadband coupled plasmonic resonators; dipolar modes; integrated absorption; metamaterial super absorbers; operational bandwidth ranging; periodic array; plasmon hybridization; pyramidal metal-dielectric layers; ultra-broadband super absorbers; Absorption; Gold; Metamaterials; Optical resonators; Plasmons; Silicon;
Conference_Titel :
Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS), 2014 8th International Congress on
Conference_Location :
Lyngby
Print_ISBN :
978-1-4799-3450-8
DOI :
10.1109/MetaMaterials.2014.6948642
