Anisotropic and omnidirectional focusing in Luneburg lens structure with gradient photonic crystals

被引：8

作者：

Zhao, Yuan-Yuan ^{[1
,2
,3
]}

Zhang, Yong-Liang ^{[1
,2
]}

Zheng, Mei-Ling ^{[1
,2
]}

Dong, Xian-Zi ^{[1
,2
]}

Duan, Xuan-Ming ^{[1
,2
,3
]}

Zhao, Zhen-Sheng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Tech Inst Phys & Chem, Lab Organ NanoPhoton, 29 Zhongguancun East Rd, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, CAS Key Lab Bioinspired Mat & Interfacial Sci, 29 Zhongguancun East Rd, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Shuitu Technol Dev Zone, 266 Fangzheng Ave, Chongqing 400714, Peoples R China

来源：

JOURNAL OF OPTICS | 2017年 / 19卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Luneburg lens; photonic crystals; metamaterial; nanophotonics; gradient index; INDEX; METAMATERIALS; SINGULARITIES;

D O I：

10.1088/2040-8986/19/1/015605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a flexible design for implementation of the Luneburg lens with gradient photonic crystals. The full-wave simulation results demonstrate the excellent performance of omnidirectional focusing of the designed Luneburg lens over a broad frequency band, and firstly exhibit anisotropic focusing in the designed Luneburg lens with a specific frequency band. In this study, our effort is focused on figuring out the operating wavelength range where the effective medium approximation theory is applicable, and the mechanism for generating anisotropic and omnidirectional focusing in Luneburg lens structure.

引用

页数：7

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