Generation of spatial Bessel beams using holographic metasurface

被引：92
|
作者：
Cai, Ben Geng [1 ]
Li, Yun Bo [1 ]
Jiang, Wei Xiang [1 ]
Cheng, Qiang [1 ]
Cui, Tie Jun [1 ]
机构：
[1] Southeast Univ, Dept Radio Engn, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 06期
基金：
美国国家科学基金会;
关键词：
LEAKY-WAVE ANTENNAS; FREQUENCIES; SCALAR;
D O I：
10.1364/OE.23.007593
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose to use backward radiations of leaky waves supported by a holographic metasurface to produce spatial Bessel beams in the microwave frequency regime. The holographic metasurface consists of a grounded dielectric slab and a series of metal patches. By changing the size of metal patches, the surface-impedance distribution of the holographic metasurface can be modulated, and hence the radiation properties of the leaky waves can be designed to realize Bessel beams. Both numerical simulations and experiments verify the features of spatial Bessel beams, which may be useful in imaging applications or wireless power transmissions with the dynamic focal-depth controls. (C) 2015 Optical Society of America
引用
收藏
页码：7593 / 7601
页数：9
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