发光学报2018，Vol.39Issue(2)：188-195,8.DOI:10.3788/fgxb20183902.0188
混合表面等离子体激元的纳米激光器设计
Design of A Novel Hybrid Surface Plasmonic Nanolaser
摘要
Abstract
In order to optimize the performance of nanolasers,a nanolaser structure based on a nanowire/semicircle MgF2/triangle air slot and metal ridge was proposed.The models produce that the SPP mode and nanowire waveguides coupled in the dielectric layer of low refractive index can store light energy like a capacitor under low refractive index clearance.Low refractive index of the air tank field strength increased significantly.The electric field distribution,the modal properties,the quality factor and the lasing threshold are investigated by using the finite-element method on the basis of the COMSOL Multiphysics platform.Through the comprehensive analysis of each part of the line chart,the model performance data are obtained.Simulation results reveal that this kind of nano laser has a low propagation loss and high field confinement ability,its minimum normalized mode area is only 0.004 8,the minimum propagation loss is only 0.002.The waveguide mode field area and limiting factors show that the modeled laser can achieve sub-wavelength constraints of the output light field.It can achieve low gain threshold,low transmission loss and high quality factor requirements.关键词
纳米激光器/表面等离子体/模式特性/增益阈值/品质因数/有限元Key words
nanolaser/surface plasmon/mode properties/threshold/quality factor/finite element分类
信息技术与安全科学引用本文复制引用
尤婷,吴飞,董伟..混合表面等离子体激元的纳米激光器设计[J].发光学报,2018,39(2):188-195,8.基金项目
国家自然科学基金青年基金(61603211)资助项目 （61603211）
Supported by National Natural Science Foundation for Youth(61603211) （61603211）
