Full-Stokes Polarization Perfect Absorption with Diatomic Metasurfaces

被引：111

作者：

Liang, Yao ^{[1
]}

Lin, Han ^{[1
]}

Koshelev, Kirill ^{[2
,3
]}

Zhang, Fengchun ^{[4
]}

Yang, Yunyi ^{[1
]}

Wu, Jiayang ^{[5
]}

Kivshar, Yuri ^{[2
,3
]}

Jia, Baohua ^{[1
]}

机构：

[1] Swinburne Univ Technol, Fac Sci Engn & Technol, Ctr Translat Atomat CTAM, Hawthorn, Vic 3122, Australia

[2] Australian Natl Univ, Nonlinear Phys Ctr, Res Sch Phys, Canberra, ACT 2601, Australia

[3] ITMO Univ, Dept Phys & Engn, St Petersburg 197101, Russia

[4] South China Normal Univ, Inst Semicond Sci & Technol, Guangzhou 510631, Peoples R China

[5] Swinburne Univ Technol, Fac Sci Engn & Technol, Opt Sci Ctr, Hawthorn, Vic 3122, Australia

来源：

NANO LETTERS | 2021年 / 21卷 / 02期

基金：

澳大利亚研究理事会; 俄罗斯基础研究基金会;

关键词：

Plasmonic metasurfaces; perfect absorption; full-Stokes polarimetry; field enhancement; ABSORBER; RESONATORS;

D O I：

10.1021/acs.nanolett.0c04456

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Metamaterial-based perfect absorbers provide efficient ways for selective absorption of light with both linear or circular polarizations. Perfect absorption for an arbitrary polarization requires the development of subwavelength structures absorbing efficiently elliptically polarized light, but they remain largely unexplored. Here, we design and realize experimentally novel plasmonic metasurfaces for full-Stokes polarization perfect absorption in the mid-infrared. The metasurface unit cell consists of coupled anisotropic meta-atoms forming a diatomic metamolecule. The designed plasmonic metastructures provide a strong field enhancement by at least 1 order of magnitude higher than conventional perfect absorbers. In experiment, our plasmonic metasurfaces demonstrate sharp differentiation of spectral responses for an arbitrary pair of orthogonal polarization states (linear, circular, or elliptical) providing perfect absorption for one polarization with strong reflection for its counterpart. Our results suggest a novel route for efficient control of light polarization in metasurfaces offering numerous potential applications ranging from thermal imaging to chiral molecule detection.

引用

页码：1090 / 1095

页数：6

共 41 条

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