Ultra-broadband metamaterial absorbers from long to very long infrared regime

doi:10.1038/s41377-021-00577-8

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	Ultra-broadband metamaterial absorbers from long to very long infrared regime
	Y. Zhou; Z. Qin; Z. Liang; D. Meng; H. Xu; D. R. Smith and Y. Liu
	2021
发表期刊	Light: Science and Applications
ISSN	20955545
卷号	10 期号:1
摘要	Broadband metamaterials absorbers with high absorption, ultrathin thickness and easy configurations are in great demand for many potential applications. In this paper, we first analyse the coupling resonances in a Ti/Ge/Ti three-layer absorber, which can realise broadband absorption from 8 to 12 m. Then we experimentally demonstrate two types of absorbers based on the Ti/Ge/Si3N4/Ti configuration. By taking advantage of coupling surface plasmon resonances and intrinsic absorption of lossy material Si3N4, the average absorptions of two types of absorbers achieve almost 95% from 8 to 14 m (experiment result: 78% from 6.5 to 13.5 m). In order to expand the absorption bandwidth, we further propose two Ti/Si/SiO2/Ti absorbers which can absorb 92% and 87% of ultra-broadband light in the 1430 m and 830 m spectral range, respectively. Our findings establish general and systematic strategies for guiding the design of metamaterial absorbers with excellent broadband absorption and pave the way for enhancing the optical performance in applications of infrared thermal emitters, imaging and photodetectors. 2021, The Author(s).
DOI	10.1038/s41377-021-00577-8
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65727
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Zhou,Z. Qin,Z. Liang,et al. Ultra-broadband metamaterial absorbers from long to very long infrared regime[J]. Light: Science and Applications,2021,10(1).
APA	Y. Zhou,Z. Qin,Z. Liang,D. Meng,H. Xu,&D. R. Smith and Y. Liu.(2021).Ultra-broadband metamaterial absorbers from long to very long infrared regime.Light: Science and Applications,10(1).
MLA	Y. Zhou,et al."Ultra-broadband metamaterial absorbers from long to very long infrared regime".Light: Science and Applications 10.1(2021).

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