Extraordinary light focusing and Fourier transform properties of gradient-index metalenses

被引：32

作者：

Ma, Changbao ^{[1
]}

Escobar, Marco A. ^{[1
]}

Liu, Zhaowei ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 19期

关键词：

STRUCTURED ILLUMINATION MICROSCOPY; SOLID IMMERSION LENS; DIFFRACTION-LIMIT; NEGATIVE REFRACTION; OPTICAL HYPERLENS; RESOLUTION LIMIT; NEAR-FIELD; METAMATERIALS; SUPERLENS;

D O I：

10.1103/PhysRevB.84.195142

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We propose and demonstrate a new type of metalenses that are phase compensated by gradient index (GRIN) or inhomogeneous permittivity metamaterials. Both elliptically and hyperbolically dispersive GRIN metalenses for both internal and external focusing are studied. The requirements for the GRIN metalenses and the light focusing characteristics are analyzed and numerically verified. The GRIN metalenses can achieve super resolution and have ordinary or extraordinary Fourier transform functions, thus enabling exotic applications.

引用

页数：5

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