Controlling Photonic Nanojets: From the Standpoint of Eigenmodes

被引：1
|
作者：
Zhu, Jinlong [1 ]
Goddard, Lynford L. [1 ]
机构：
[1] Univ Illinois, Dept Elect & Comp Engn, Photon Syst Lab, Urbana, IL 61801 USA
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2018年 / 30卷 / 01期
关键词：
Nano photonics; electromagnetic devices; electromagnetic interference; microoptics; DIELECTRIC MICROSPHERES; CHAINS; LIGHT;
D O I：
10.1109/LPT.2017.2775153
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this letter, we explain how to quickly engineer and optimize photonic nanojets (PNJs) using eigenmode expansion and a transmission matrix theory. We systematically investigate how to realize an ultra-narrow beam waist and how to steer and shift the PNJ hot spot position using different linear combinations of eigenmodes. The ability to design complex beam shapes makes the technique attractive in numerous applications, including inspecting nanoparticles located deep inside a cell, super-resolution imaging, and optical lithography.
引用
收藏
页码：75 / 78
页数：4
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