Whispering gallery mode laser based on cholesteric liquid crystal microdroplets as temperature sensor

被引：47
|
作者：
Zhao, Liyuan [1 ,2 ]
Wang, Yan [1 ,2 ]
Yuan, Yonggui [1 ,3 ]
Liu, Yongjun [2 ]
Liu, Shuangqiang [2 ]
Sun, Weimin [2 ]
Yang, Jun [1 ]
Li, Hanyang [1 ]
机构：
[1] Harbin Engn Univ, Minist Educ China, Key Lab In Fiber Integrated Opt, 145 NanTong St, Harbin 150080, Heilongjiang, Peoples R China
[2] Harbin Engn Univ, Dept Phys, Harbin 150080, Heilongjiang, Peoples R China
[3] Harbin Engn Univ, Coll Informat & Commun Engn, Harbin 150001, Heilongjiang, Peoples R China
来源：
OPTICS COMMUNICATIONS | 2017年 / 402卷
基金：
中国国家自然科学基金;
关键词：
Whispering gallery mode; Cholesteric liquid crystal; Microdroplet; Temperature sensor; OPTICAL MICRORESONATORS; MICROLASERS;
D O I：
10.1016/j.optcom.2017.06.008
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We developed a tunable whispering gallery mode (WGM) microlaser based on dye-doped cholesteric liquid crystal (CLC) microdroplets with controllable size in an aqueous environment. An individual dye-doped CLC microdroplet confined at the tip of a microcapillary was optically pumped via a tapered optical fiber tip positioned within its vicinity. Numerical simulations and various spectral characteristics verify the WGM resonance of the lasing in microdroplets. Thermal tuning of the lasing modes is realized due to the thermo-optic effect of CLC. The proposed CLC microdroplet-based WGM resonator was applied as a temperature sensor and exhibited maximum temperature sensitivity up to 0.96 nm/degrees C. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：181 / 185
页数：5
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