基于准正则模理论的双柱结构中原子自发辐射特性

doi:10.13438/j.cnki.jdzk.2023.06.011

吉首大学学报（自然科学版） ›› 2023, Vol. 44 ›› Issue (6): 67-74.DOI: 10.13438/j.cnki.jdzk.2023.06.011

基于准正则模理论的双柱结构中原子自发辐射特性

陈炫任，单馨雨，杨红

(吉首大学物理与机电工程学院，湖南吉首 416000)

出版日期:2023-11-25 发布日期:2023-12-19
通讯作者: 杨红(1980—)，男，湖南浏阳人，吉首大学物理与机电工程学院副教授，博士，主要从事计算物理研究.E-mail:yanghong@jsu.edu.cn.
作者简介:)陈炫任(1997—)，男，湖南郴州人，吉首大学物理与机电工程学院硕士研究生，主要从事光与物质相互作用研究
基金资助:
吉首大学2021年研究生科研创新项目(JDY21038

Spontaneous Emission of Atoms in Double-Column Structure Based on Quasi-Normal Mode Theory

CHEN Xuanren,SHAN Xinyu,YANG Hong

(College of Physics and Electromechanical Engineering,Jishou University,Jishou 416000,Hunan China)

Online:2023-11-25 Published:2023-12-19

摘要/Abstract

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.

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

Abstract: 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.

Key words: surface plasmonic, quasi-normal mode theory, amplified spontaneous emission, double-column structure

陈炫任, 单馨雨, 杨红. 基于准正则模理论的双柱结构中原子自发辐射特性[J]. 吉首大学学报（自然科学版）, 2023, 44(6): 67-74.

CHEN Xuanren, SHAN Xinyu, YANG Hong. Spontaneous Emission of Atoms in Double-Column Structure Based on Quasi-Normal Mode Theory[J]. Journal of Jishou University(Natural Sciences Edition), 2023, 44(6): 67-74.

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基于准正则模理论的双柱结构中原子自发辐射特性

Spontaneous Emission of Atoms in Double-Column Structure Based on Quasi-Normal Mode Theory

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