Broadband converging plano-concave lens

被引：6
|
作者：
Yang, Rui [1 ]
Lei, Zhenya [1 ]
Chen, Lei [1 ]
Zhang, Jiawei [1 ]
Wang, Zhaoxu [1 ]
Xie, Yongjun [2 ]
机构：
[1] Xidian Univ, Sch Elect Engn, Xian 710071, Peoples R China
[2] Beihang Univ, Sch Elect & Informat Engn, Beijing 100191, Peoples R China
来源：
OPTICS LETTERS | 2013年 / 38卷 / 13期
关键词：
NEGATIVE REFRACTION; PLANOCONCAVE LENS;
D O I：
10.1364/OL.38.002311
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A plano-concave lens with source-tailored geometric profile and transformational gradient index is proposed for broadband illumination. Such a design, capable of focusing and collimating the electromagnetic fields, fulfils the functionality of a converging lens and can also achieve a steerable beam and multiple beams efficiently. Nonresonant synthesis with a perforated dielectric plate and dielectric rod arrays is demonstrated for the lensing realization, promising a wide operating frequency band in the practical implementation. (C) 2013 Optical Society of America
引用
收藏
页码：2311 / 2313
页数：3
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