Fast design of broadband terahertz diffusion metasurfaces

被引：30
作者：
Zhao, Jie [1 ,2 ]
Cheng, Qiang [1 ,3 ]
Wang, Tian Qi [1 ,2 ]
Yuan, Wei [1 ,2 ]
Cui, Tie Jun [1 ,3 ]
机构：
[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
[2] Southeast Univ, Synerget Innovat Ctr Wireless Commun Technol, Nanjing 210096, Jiangsu, Peoples R China
[3] Cooperat Innovat Ctr Terahertz Sci, 4,Sect 2,North Jianshe Rd, Chengdu 610054, Peoples R China
来源：
OPTICS EXPRESS | 2017年 / 25卷 / 02期
基金：
美国国家科学基金会;
关键词：
WIDE-BAND; ANOMALOUS REFLECTION; POLARIZATION; REDUCTION; SURFACES; PHASE; ANGLE; WAVE; METAMATERIALS;
D O I：
10.1364/OE.25.001050
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A method for fast design of broadband terahertz diffusion metasurface is presented. The proposed metasurface is composed by three kinds of simply patterned elements with different resonant properties. To obtain the best broadband performance with the lowest backward reflections, a genetic algorithm is developed to manipulate the resonances for the fast determination of element geometries. An inverse discrete Fourier transform method is used to predict the scattering pattern of the metasurface with high accuracy and low time consumption, significantly enhancing the efficiency of the array-pattern design. The proposed fast design flow will benefit a broad range of terahertz applications, such as biological detection and imaging. (C) 2017 Optical Society of America
引用
收藏
页码：1050 / 1061
页数：12
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