Near-infrared broadband absorber with film-coupled multilayer nanorods

被引：67

作者：

Chen, Xingxing ^{[1
]}

Gong, Hanmo ^{[1
]}

Dai, Shuowei ^{[1
]}

Zhao, Ding ^{[1
]}

Yang, Yuanqing ^{[1
]}

Li, Qiang ^{[1
]}

Qiu, Min ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Dept Opt Engn, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

[2] Royal Inst Technol, Sch Informat & Commun Technol, S-16440 Kista, Sweden

来源：

OPTICS LETTERS | 2013年 / 38卷 / 13期

基金：

中国国家自然科学基金; 瑞典研究理事会;

关键词：

TOTAL ABSORPTION; GOLD NANORODS; LIGHT; SURFACES; GRATINGS;

D O I：

10.1364/OL.38.002247

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Turning the surfaces of noble metals (metasurfaces) into black (highly absorptive) surfaces can be potentially applied in thermophotovoltaics, sensing, tailoring thermal emissivity, etc. Here we demonstrate an extremely broadband absorber for the 900-1600 nm wavelength range with robust high absorption efficiency. The inexpensive droplet evaporation method is implemented to create patterns of nanoparticles dispersed on a gold film spaced by a thin dielectric layer. The diversity of the complicated random stacking of the chemically synthesized gold nanorods is the major factor for the broad absorption band. Such a metamaterial absorber may pave the way for cost-effective manufacture of large-area black metasurfaces. (C) 2013 Optical Society of America

引用

页码：2247 / 2249

页数：3

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