Tunability of Fano resonance in cylindrical core-shell nanorods

作     者：Ben-Li Wang 王本立

作者机构：College of Mathematics and PhysicsBeijing University of Chemical TechnologyBeijing 100029China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第4期

页      面：322-326页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 070204[理学-等离子体物理] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.11647021) 

主　　题：Fano resonance tunability local surface plasmon resonance optical devices 

摘      要：The optical properties of cylindrical core–shell nanorods(CCSNs)are theoretically investigated in this *** results show that Fano resonance can be generated in CCSNs,and the wavelength and the intensity at Fano dip can be tuned respectively by adjusting the field coupling of cavity mode inside and near field on gold *** high tuning sensitivity which is about 400 nm per refractive-index unit can be obtained,and an easy-to-realize tunable parameter is also proposed.A two-oscillator model is also introduced to describe the generation of Fano resonance in CCSNs,and the results from this model are in good agreement with theoretical *** CCSNs investigated in this work may have promising applications in optical devices.