Deep subwavelength beam propagation in extremely loss-anisotropic metamaterials

被引：11
|
作者：
He, Yingran [1 ,2 ]
Sun, Lei [1 ]
He, Sailing [2 ]
Yang, Xiaodong [1 ]
机构：
[1] Missouri Univ Sci & Technol, Dept Mech & Aerosp Engn, Rolla, MO 65409 USA
[2] Zhejiang Univ, Zhejiang Prov Key Lab Sensing Technol, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China
来源：
JOURNAL OF OPTICS | 2013年 / 15卷 / 05期
基金：
中国国家自然科学基金;
关键词：
multilayer metamaterials; extreme loss-anisotropy; deep subwavelength propagation; nonlocal effect; NANOSCALE; HYPERLENS;
D O I：
10.1088/2040-8978/15/5/055105
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Metal-dielectric multilayer metamaterials with extreme loss-anisotropy, in which the longitudinal component of the permittivity tensor has an ultra-large imaginary part, are proposed and designed. Diffraction-free deep subwavelength beam propagation and manipulation, due to the nearly flat iso-frequency contour, is demonstrated in such loss-anisotropic metamaterials. It is also shown that deep subwavelength beam propagation can be realized in practical multilayer structures with large multilayer periods, when the nonlocal effect is considered.
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页数：4
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