摘要
基于准正则模理论,分别考虑金属中自由电子的局域光响应模型、流体动力学模型和广义非局域光学响应模型,研究纳米双柱结构中二能级原子的自发辐射增强特性.利用耦合模理论,研究二能级原子所处位置和双柱间隙对自发辐射增强特性的影响.结果表明,相较于全波仿真方法,准正则模方法可准确高效地计算表面等离激元纳米双柱结构中原子的自发辐射增强谱,原子所处位置和纳米柱间隙均对准正则模式共振频率产生重要影响.
Based on the quasi-normal mode(QNM)theory,in the local photoresponse model,fluid dynamics model and generalized non-local photoresponse model of free electrons in metals,the spontaneous emission enhancement characteristics of two-level atoms in the nano-column structure are studied.With efficient coupled QNM theory,the effects of quantum dot position and double-column gap distance on the enhancement properties of spontaneous emission are investigated.The results show that compared with the full-wave method,the quasi-canonical mode method can efficiently and accurately calculate the enhanced characteristics of spontaneous emission,and the nanopillar gap has an important influence on the resonance frequency of the quasi-canonical mode.These studies have important guiding significance for understanding the nanoscale dimer structure to enhance light-matter interaction.
作者
陈炫任
单馨雨
杨红
CHEN Xuanren;SHAN Xinyu;YANG Hong(College of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China)
出处
《吉首大学学报（自然科学版）》
CAS
2023年第6期67-74,96,共9页
Journal of Jishou University(Natural Sciences Edition)
基金
吉首大学2021年研究生科研创新项目(JDY21038)。
关键词
表面等离激元
准正则模理论
自发辐射增强
双柱结构
surface plasmonic
quasi-normal mode theory
amplified spontaneous emission
double-column structure
