Wave front engineering from an array of thin aperture antennas

被引：311

作者：

Kang, Ming ^{[1
,2
,3
]}

Feng, Tianhua ^{[1
,4
]}

Wang, Hui-Tian ^{[2
,3
,5
]}

Li, Jensen ^{[1
,4
]}

机构：

[1] City Univ Hong Kong, Dept Phys & Mat Sci, Kowloon Tong, Hong Kong, Peoples R China

[2] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China

[3] Nankai Univ, Key Lab Weak Light Nonlinear Photon, Tianjin 300071, Peoples R China

[4] City Univ Hong Kong, State Key Lab Millimeter Waves, Kowloon, Hong Kong, Peoples R China

[5] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 14期

基金：

中国国家自然科学基金;

关键词：

PHASE DISCONTINUITIES; LIGHT; REFRACTION; REFLECTION;

D O I：

10.1364/OE.20.015882

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose an ultra-thin metamaterial constructed by an ensemble of the same type of anisotropic aperture antennas with phase discontinuity for wave front manipulation across the metamaterial. A circularly polarized light is completely converted to the cross-polarized light which can either be bent or focused tightly near the diffraction limit. It depends on a precise control of the optical-axis profile of the antennas on a subwavelength scale, in which the rotation angle of the optical axis has a simple linear relationship to the phase discontinuity. Such an approach enables effective wave front engineering within a subwavelength scale. (C) 2012 Optical Society of America

引用

页码：15882 / 15890

页数：9

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