中国物理B ›› 2022, Vol. 31 ›› Issue (1): 14214-014214.doi: 10.1088/1674-1056/ac0523

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Lattice plasmon mode excitation via near-field coupling

Yun Lin(林蕴)1,2, Shuo Shen(申烁)1, Xiang Gao(高祥)1, and Liancheng Wang(汪炼成)1,†   

  1. 1 State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;
    2 Xiangya School of Stomatology, Xiangya Stomatological Hospital, Central South University, Changsha 410000, China
  • 收稿日期:2021-03-12 修回日期:2021-05-22 接受日期:2021-05-26 出版日期:2021-12-03 发布日期:2021-12-28
  • 通讯作者: Liancheng Wang E-mail:liancheng_wang@csu.edu.cn
  • 基金资助:
    Project supported by Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology), Ministry of Education, Shenzhen, China, the National Key Research and Development Program of China (Grant No. 2018YFB0406702), Professorship Startup Funding (Grant No. 217056), Innovation-Driven Project of Central South University (Grant No. 2018CX001), Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University (Grant No. ZZYJKT201801).

Lattice plasmon mode excitation via near-field coupling

Yun Lin(林蕴)1,2, Shuo Shen(申烁)1, Xiang Gao(高祥)1, and Liancheng Wang(汪炼成)1,†   

  1. 1 State Key Laboratory of High Performance Complex Manufacturing, College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;
    2 Xiangya School of Stomatology, Xiangya Stomatological Hospital, Central South University, Changsha 410000, China
  • Received:2021-03-12 Revised:2021-05-22 Accepted:2021-05-26 Online:2021-12-03 Published:2021-12-28
  • Contact: Liancheng Wang E-mail:liancheng_wang@csu.edu.cn
  • Supported by:
    Project supported by Key Laboratory of Energy Conversion and Storage Technologies (Southern University of Science and Technology), Ministry of Education, Shenzhen, China, the National Key Research and Development Program of China (Grant No. 2018YFB0406702), Professorship Startup Funding (Grant No. 217056), Innovation-Driven Project of Central South University (Grant No. 2018CX001), Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University (Grant No. ZZYJKT201801).

摘要: The optical response of metal nanoparticles can be modified through near-field or far-field interaction, yet the lattice plasmon modes (LPMs) considered can only be excited from the latter. Here instead, we present a theoretical evaluation for LPM excitation via the near-field coupling process. The sample is an arrayed structure with specific units composed of upper metal disks, a lower metal hole and a sandwiched dielectric post. The excitation process and underlying mechanism of the LPM and the influence of the structure parameters on the optical properties have been investigated in detail by using a finite-difference time-domain (FDTD) numerical method. Our investigation presented here should advance the understanding of near-field interaction of plasmon modes for LPM excitation, and LPMs could find some potential applications, such as in near-field optical microscopes, biosensors, optical filters and plasmonic lasers.

关键词: optical response of metal nanoparticles, lattice plasmon modes, finite-difference time-domain

Abstract: The optical response of metal nanoparticles can be modified through near-field or far-field interaction, yet the lattice plasmon modes (LPMs) considered can only be excited from the latter. Here instead, we present a theoretical evaluation for LPM excitation via the near-field coupling process. The sample is an arrayed structure with specific units composed of upper metal disks, a lower metal hole and a sandwiched dielectric post. The excitation process and underlying mechanism of the LPM and the influence of the structure parameters on the optical properties have been investigated in detail by using a finite-difference time-domain (FDTD) numerical method. Our investigation presented here should advance the understanding of near-field interaction of plasmon modes for LPM excitation, and LPMs could find some potential applications, such as in near-field optical microscopes, biosensors, optical filters and plasmonic lasers.

Key words: optical response of metal nanoparticles, lattice plasmon modes, finite-difference time-domain

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
42.30.Lr (Modulation and optical transfer functions) 78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures) 92.60.Ta (Electromagnetic wave propagation)