Ultra-broadband nanowire metamaterial absorber

查看全文 作　　者：BAOQING [1,2]WANG;CUIPING [2]MA;PENG [1]YU;ALEXANDER [3]O.GOVOROV;HONGXING [4]XU;WENHAO [2]WANG;LUCAS [5]V.BESTEIRO;ZHIMIN [2]JING;PEIHANG [2]LI;ZHIMING [2]WANG

机构地区：[1]College of Optoelectronic Technology,Chengdu University of Information Technology,Chengdu 610225,China;[2]Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 610054,China;[3]Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute,Ohio University,Athens,Ohio 45701,USA;[4]School of Physics and Technology,Center for Nanoscience and Nanotechnology,Wuhan University,Wuhan 430072,China;[5]CINBIO,Universidade de Vigo,Vigo 36310,Spain

出　　处：《Photonics Research》索引2022年第10卷第12期,共10页

基　　金：National Natural Science Foundation of China(62005037);Chengdu University of Information Technology(KYTZ202180);National Key Research and Development Program of China(2019YFB2203400);111 Project(B20030)。 摘　　要：Broadband absorbers generally consist of plasmonic cavities coupled to metallic resonators separated by a dielectric film,and they are vertically stacking configurations.In this work,we propose an ultra-broadband nanowire metamaterial absorber composed of an array of vertically aligned dielectric nanowires with coaxial metallic rings.The absorber shows strong absorption from 0.2 to 7μm with an average absorption larger than 91%due to the excitation of gap surface plasmon polariton modes in Fabry–Perot-like resonators.Moreover,a refractory dielectric cladding can be added to improve the thermal stability of the absorber,showing a negligible impact on its absorption performance.The proposed absorber may find potential applications in solar energy harvesting,infrared imaging and spectroscopy,and optoelectronic devices. 关键词：ABSORBER NANOWIRES DIELECTRIC

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Ultra-broadband nanowire metamaterial absorber

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