中国物理B ›› 2024, Vol. 33 ›› Issue (4): 44204-044204.doi: 10.1088/1674-1056/ad1a8b

所属专题: SPECIAL TOPIC — Optical field manipulation

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Plasmon-induced nonlinear response on gold nanoclusters

Yuhui Song(宋玉慧), Yifei Cao(曹逸飞), Sichen Huang(黄思晨), Kaichao Li(李凯超), Ruhai Du(杜如海), Lei Yan(严蕾), Zhengkun Fu(付正坤), and Zhenglong Zhang(张正龙)   

  1. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
  • 收稿日期:2023-10-11 修回日期:2023-12-29 接受日期:2024-01-04 出版日期:2024-03-19 发布日期:2024-03-22
  • 通讯作者: Lei Yan, Zhenglong Zhang E-mail:yanlei@snnu.edu.cn;zlzhang@snnu.edu.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant Nos. 2020YFA0211300 and 2021YFA1201500), the National Natural Science Foundation of China (Grant Nos. U22A6005, 92150110, 12074237, and 12304426), the Natural Science Foundation of Shaanxi Province (Grant No. 2024JC-JCQN-07), the Fundamental Science Foundation of Shaanxi (Grant No. 22JSZ010), and the Fundamental Research Funds for Central Universities (Grant Nos. GK202201012 and GK202308001).

Plasmon-induced nonlinear response on gold nanoclusters

Yuhui Song(宋玉慧), Yifei Cao(曹逸飞), Sichen Huang(黄思晨), Kaichao Li(李凯超), Ruhai Du(杜如海), Lei Yan(严蕾), Zhengkun Fu(付正坤), and Zhenglong Zhang(张正龙)   

  1. School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710119, China
  • Received:2023-10-11 Revised:2023-12-29 Accepted:2024-01-04 Online:2024-03-19 Published:2024-03-22
  • Contact: Lei Yan, Zhenglong Zhang E-mail:yanlei@snnu.edu.cn;zlzhang@snnu.edu.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant Nos. 2020YFA0211300 and 2021YFA1201500), the National Natural Science Foundation of China (Grant Nos. U22A6005, 92150110, 12074237, and 12304426), the Natural Science Foundation of Shaanxi Province (Grant No. 2024JC-JCQN-07), the Fundamental Science Foundation of Shaanxi (Grant No. 22JSZ010), and the Fundamental Research Funds for Central Universities (Grant Nos. GK202201012 and GK202308001).

摘要: The plasmon-induced nonlinear response has attracted great attention in micro-nano optics and optoelectronics applications, yet the underlying microscopic mechanism remains elusive. In this study, the nonlinear response of gold nanoclusters when exposed to a femtosecond laser pulse was investigated using time-dependent density functional theory. It was observed that the third-order tunneling current was augmented in plasmonic dimers, owing to a greater number of electrons in the dimer being excited from occupied to unoccupied states. These findings provide profound theoretical insights and enable the realization of accurate regulation and control of nonlinear effects induced by plasmons at the atomic level.

关键词: plasmon, nonlinear optics, time-dependent density functional theory (TDDFT)

Abstract: The plasmon-induced nonlinear response has attracted great attention in micro-nano optics and optoelectronics applications, yet the underlying microscopic mechanism remains elusive. In this study, the nonlinear response of gold nanoclusters when exposed to a femtosecond laser pulse was investigated using time-dependent density functional theory. It was observed that the third-order tunneling current was augmented in plasmonic dimers, owing to a greater number of electrons in the dimer being excited from occupied to unoccupied states. These findings provide profound theoretical insights and enable the realization of accurate regulation and control of nonlinear effects induced by plasmons at the atomic level.

Key words: plasmon, nonlinear optics, time-dependent density functional theory (TDDFT)

中图分类号:  (Nonlinear optics)

  • 42.65.-k
31.15.ee (Time-dependent density functional theory) 36.40.Vz (Optical properties of clusters)