Tunable photonic nanojet formed by generalized Luneburg lens

被引：21
作者：
Mao, Xiurun [1 ]
Yang, Yang [2 ]
Dai, Haitao [1 ]
Luo, Dan [3 ]
Yao, Baoli [4 ]
Yan, Shaohui [4 ]
机构：
[1] Tianjin Univ, Sch Sci, Tianjin Key Lab Low Dimens Mat Phys & Preparing T, Tianjin 300072, Peoples R China
[2] Tianjin Univ Technol, Coll Sci, Dept Phys, Tianjin 300191, Peoples R China
[3] South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
[4] Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
来源：
OPTICS EXPRESS | 2015年 / 23卷 / 20期
基金：
中国国家自然科学基金;
关键词：
SIZED SPHERICAL-PARTICLES; NANOPARTICLES; BACKSCATTERING; MICROSPHERE; LIGHT; JET;
D O I：
10.1364/OE.23.026426
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nanojet has been emerging as an interesting topic in variety photonics applications. In this paper, inspired by the properties of generalized Luneburg lens (GLLs), a two-dimensional photonic nanojet system has been developed, which focal distance can be tuned by engineering the refractive index profile of GLLs. Simulation and analysis results show that the maximum light intensity, transverse and longitudinal dimensions of the photonic nanojet are dependent on the focal distance of the GLLs, thereby, by simply varying the focal distance, it is possible to obtain localized photon fluxes with different power characteristics and spatial dimensions. This can be of interest for many promising applications, such as high-resolution optical detection, optical manipulation, technology of direct-write nano-patterning and nano-lithography. (C) 2015 Optical Society of America
引用
收藏
页码：26426 / 26433
页数：8
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