Ultrabroadband Light Absorption by a Sawtooth Anisotropic Metamaterial Slab

被引：930

作者：

Cui, Yanxia ^{[1
,2
,3
,4
,5
]}

Fung, Kin Hung ^{[1
,2
,6
]}

Xu, Jun ^{[1
,2
,6
]}

Ma, Hyungjin ^{[1
,2
]}

Jin, Yi ^{[3
,4
]}

He, Sailing ^{[3
,4
]}

Fang, Nicholas X. ^{[1
,2
,6
]}

机构：

[1] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA

[2] Univ Illinois, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA

[3] Zhejiang Univ, Hangzhou 310058, Zhejiang, Peoples R China

[4] Royal Inst Technol, Joint Res Ctr Photon, Stockholm, Sweden

[5] Taiyuan Univ Technol, Dept Phys & Optoelect, Taiyuan 030024, Peoples R China

[6] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

来源：

NANO LETTERS | 2012年 / 12卷 / 03期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Slow light; absorber; metamaterials; ultrabroadband; thin film; anisotropic; FUNDAMENTAL LIMIT; WAVE-GUIDE; ABSORBER; BROAD;

D O I：

10.1021/nl204118h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present an ultrabroadband thin-film infrared absorber made of sawtoothed anisotropic metamaterial. Absorptivity of higher than 95% at normal incidence is supported in a wide range of frequencies, where the full absorption width at half-maximum is about 86%. Such property is retained well at a very wide range of incident angles too. Light of shorter wavelengths are harvested at upper parts of the sawteeth of smaller widths, while light of longer wavelengths are trapped at lower parts of larger tooth widths. This phenomenon is explained by the slowlight modes in anisotropic metamaterial waveguide. Our study can be applied in the field of designing photovoltaic devices and thermal emitters.

引用

页码：1443 / 1447

页数：5

共 35 条

[1] Wide-angle infrared absorber based on a negative-index plasmonic metamaterial [J].

Avitzour, Yoav ;

Urzhumov, Yaroslav A. ;

Shvets, Gennady .

PHYSICAL REVIEW B, 2009, 79 (04)

[2]

Cai W, 2010, OPTICAL METAMATERIALS: FUNDAMENTALS AND APPLICATIONS, P1, DOI 10.1007/978-1-4419-1151-3

[3] Antireflection Coating Using Metamaterials and Identification of Its Mechanism [J].

Chen, Hou-Tong ;

Zhou, Jiangfeng ;

O'Hara, John F. ;

Chen, Frank ;

Azad, Abul K. ;

Taylor, Antoinette J. .

PHYSICAL REVIEW LETTERS, 2010, 105 (07)

[4] A metamaterial solid-state terahertz phase modulator [J].

Chen, Hou-Tong ;

Padilla, Willie J. ;

Cich, Michael J. ;

Azad, Abul K. ;

Averitt, Richard D. ;

Taylor, Antoinette J. .

NATURE PHOTONICS, 2009, 3 (03) :148-151

[5]

Choy T. C., 1999, Effective Medium Theory: Principles and Applications

[6] A thin film broadband absorber based on multi-sized nanoantennas [J].

Cui, Yanxia ;

Xu, Jun ;

Fung, Kin Hung ;

Jin, Yi ;

Kumar, Anil ;

He, Sailing ;

Fang, Nicholas X. .

APPLIED PHYSICS LETTERS, 2011, 99 (25)

[7] Plasmon-Assisted Optical Curtains [J].

Cui, Yanxia ;

Xu, Jun ;

He, Sailing ;

Fang, Nicholas X. .

PLASMONICS, 2010, 5 (04) :369-374

[8] 3D optical Yagi-Uda nanoantenna array [J].

Dregely, Daniel ;

Taubert, Richard ;

Dorfmueller, Jens ;

Vogelgesang, Ralf ;

Kern, Klaus ;

Giessen, Harald .

NATURE COMMUNICATIONS, 2011, 2

[9] Slow propagation of electromagnetic waves in a dielectric slab waveguide with a left-handed material substrate [J].

He, JL ;

He, SL .

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2006, 16 (02) :96-98

[10] Experimental demonstration of terahertz metamaterial absorbers with a broad and flat high absorption band [J].

Huang, Li ;

Chowdhury, Dibakar Roy ;

Ramani, Suchitra ;

Reiten, Matthew T. ;

Luo, Sheng-Nian ;

Taylor, Antoinette J. ;

Chen, Hou-Tong .

OPTICS LETTERS, 2012, 37 (02) :154-156

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