Polarization-independent longitudinal multi-focusing metalens

被引：85

作者：

Wang, Wei ^{[1
,2
,3
]}

Guo, Zhongyi ^{[1
,2
]}

Zhou, Keya ^{[3
]}

Sun, Yongxuan ^{[1
]}

Shen, Fei ^{[1
]}

Li, Yan ^{[2
]}

Qu, Shiliang ^{[2
]}

Liu, Shutian ^{[3
]}

机构：

[1] Hefei Univ Technol, Sch Comp & Informat, Hefei 230009, Peoples R China

[2] Harbin Inst Technol Weihai, Dept Optoelect Sci, Weihai 264209, Peoples R China

[3] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 23期

基金：

中国国家自然科学基金;

关键词：

BROAD-BAND; ULTRA-THIN; LENS; METAMATERIAL; DESIGN; PLANAR;

D O I：

10.1364/OE.23.029855

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A novel multi-focusing metalens in the longitudinal direction has been proposed and investigated based on the equal optical path principle, which is independent on the incident polarizations and can be suitable for both of the linear and circular polarization incidences simultaneously. Here, three novel designing principles: partitioned mode, radial alternating mode and angular alternating mode, have been proposed firstly for constructing different types of the longitudinal multi-focusing metalenses. The performances of the designed metalenses based on the different designed methods have also been analyzed and investigated in detail, and the intensity ratio of the focusing spots can be tuned easily by modulating the numbers of the relative type of nanoantennas, which is significant for the micro-manipulating optics and the multi-imaging technology in the integrated optics. (C) 2015 Optical Society of America

引用

页码：29855 / 29866

页数：12

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