Direct imaging of tunable photonic nanojets from a self-assembled liquid crystal microdroplet

被引：10
|
作者：
Matsui, Tatsunosuke [1 ,2 ]
Tsukuda, Kazuya [1 ]
机构：
[1] Mie Univ, Grad Sch Engn, Dept Elect & Elect Engn, 1577 Kurimamachiya, Tsu, Mie 5148507, Japan
[2] Mie Univ, Ctr Ultimate Technol Nanoelect, 1577 Kurimamachiya, Tsu, Mie 5148507, Japan
来源：
OPTICS LETTERS | 2017年 / 42卷 / 22期
基金：
日本学术振兴会;
关键词：
DIFFRACTION LIMIT; LIGHT; MICROSPHERES;
D O I：
10.1364/OL.42.004663
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the direct experimental observation of electrically tunable photonic nanojets (PNJs) generated from self-assembled liquid crystal (LC) microdroplets formed by dispersing nematic LCs in polymer matrix. Optical measurements were performed with a home-built laser-scanning confocal microscope system. PNJs with subwave-length beam waists were successfully obtained from LC microdroplets of 5 mu m diameter, similar to those from SiO2 microspheres of the same size. By applying external voltage of a few volts, some of major properties of PNJs, such as beam length and brightness, are tuned. Electro-tunable PNJs from self-assembled LC microdroplets may open the way for the development of novel micro-optical devices. (C) 2017 Optical Society of America
引用
收藏
页码：4663 / 4666
页数：4
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