Dispersion management of anisotropic metamirror for super-octave bandwidth polarization conversion

被引：160

作者：

Guo, Yinghui ^{[1
,2
]}

Wang, Yanqin ^{[1
]}

Pu, Mingbo ^{[1
]}

Zhao, Zeyu ^{[1
]}

Wu, Xiaoyu ^{[1
]}

Ma, Xiaoliang ^{[1
]}

Wang, Changtao ^{[1
]}

Yan, Lianshan ^{[2
]}

Luo, Xiangang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Opt & Elect, State Key Lab Opt Technol Nanofabricat & Microeng, Chengdu 610209, Peoples R China

[2] Southwest Jiaotong Univ, Sch Informat Sci & Technol, Ctr Informat Photon & Commun, Chengdu 610031, Sichuan, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

高等学校博士学科点专项科研基金;

关键词：

BROAD-BAND; PERFECT ABSORBER; METAMATERIAL; METASURFACES; PHASE;

D O I：

10.1038/srep08434

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Dispersion engineering of metamaterials is critical yet not fully released in applications where broadband and multispectral responses are desirable. Here we propose a strategy to circumvent the bandwidth limitation of metamaterials by implementing two-dimensional dispersion engineering in the meta-atoms. Lorentzian resonances are exploited as building blocks in both dimensions of the dedicatedly designed meta-atoms to construct the expected dispersion. We validated this strategy by designing and fabricating an anisotropic metamirror, which can accomplish achromatic polarization transformation in 4-octave bandwidth (two times of previous broadband converters). This work not only paves the way for broadband metamaterials design but also inspire potential applications of dispersion management in nano-photonics.

引用

页数：7

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