Exotic coupling between plasmonic nanoparticles through geometric configurations

Zhang，Weidong1; Chiang，Hong1; Wen，Te1; Ye，Lulu1; Lin，Hai1; Xu，Haitan2; Gong，Qihuang1; Lu，Guowei1

10.1117/12.2599716

2021

0277-786X

1996-756X

Proceedings of SPIE - The International Society for Optical Engineering

11904

Coupled plasmonic systems are of great interest and have many applications such as information processing and sensing. By choosing proper geometric configurations of coupled plasmonic systems, one can obtain various optical properties. However, some interesting and important effects could not be described by earlier methods. We develop an improved method for coupled plasmonic nanoparticle systems that maps geometric configurations to optical properties more accurately. With the improved method, we realize a low-loss cavity of metallic nanoparticles through a proper geometric configuration, and we find a limit to the loss in the metallic nano-cavity. We also use this method to realize an exceptional point and exceptional nexus in a hybrid plasmonic system. Finally, we predict asymmetric coupling, which leads to chirality and directional energy transfer.

Dark states Optical coupling Plasmons

其他

英语

EI

20215211386455

Energy transfer ; Geometry ; Optical properties ; Plasmonic nanoparticles

Light/Optics:741.1 ; Nanotechnology:761 ; Mathematics:921 ; Plasma Physics:932.3

2-s2.0-85121637837

Scopus

1.The School of Physics,Peking University,Beijing,100871,China
2.Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Zhang，Weidong,Chiang，Hong,Wen，Te,et al. Exotic coupling between plasmonic nanoparticles through geometric configurations[C],2021.