Coupling of Cutoff Modes in a Chain of Nonlinear Metallic Nanorods  

作　　者：崔维娜 李红霞 孙敏 朱永元 

机构地区：[1]Department of Applied Physics,Nanjing University of Science and Technology [2]Key Laboratory of Modern Acoustics,National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures,Nanjing University

出　　处：《Chinese Physics Letters》2016年第12期45-49,共5页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China under Grant No 2012CB921502;the National Natural Science Foundation of China under Grant Nos 11374150,11074120,11274163 and 11274164;the Priority Academic Program Development of Jiangsu Higher Education Institutions of China

摘　　要：We study the coupling of cutoff modes in a chain of metallic nanorods embedded in a Kerr nonlinear optical medium with strong near-field interactions analytically. Based on a quasidiscreteness approach, we derive a system of two coupled nonlinear Schrbdinger equations governing the evolution of the envelopes of these modes. It is shown that this system supports a variety of subwavelength plasmonic lattice vector solitons of the bright- bright, bright-dark, dark-bright, and dark-dark type through a cross-phase modulation. It is also shown that the existence of different solitons depends strongly on the gap width scaled for the rod radius and the type of nonlinearity of the embedded medium.We study the coupling of cutoff modes in a chain of metallic nanorods embedded in a Kerr nonlinear optical medium with strong near-field interactions analytically. Based on a quasidiscreteness approach, we derive a system of two coupled nonlinear Schrbdinger equations governing the evolution of the envelopes of these modes. It is shown that this system supports a variety of subwavelength plasmonic lattice vector solitons of the bright- bright, bright-dark, dark-bright, and dark-dark type through a cross-phase modulation. It is also shown that the existence of different solitons depends strongly on the gap width scaled for the rod radius and the type of nonlinearity of the embedded medium.

关 键 词：of on is it mode Coupling of Cutoff Modes in a Chain of Nonlinear Metallic Nanorods in for 

分 类 号：TB383.1[一般工业技术—材料科学与工程]