Exotic coupling between plasmonic nanoparticles through geometric configurations

Weidong Zhang; Hong Chiang; Te Wen; Lulu Ye; Hai Lin; Haitan Xu; Qihuang Gong; Guowei Lu

doi:10.1117/12.2599716

9 October 2021 Exotic coupling between plasmonic nanoparticles through geometric configurations

Weidong Zhang, Hong Chiang, Te Wen, Lulu Ye, Hai Lin, Haitan Xu, Qihuang Gong, Guowei Lu

Proceedings Volume 11904, Plasmonics VI; 119040W (2021) https://doi.org/10.1117/12.2599716
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

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.

Citation Download Citation

Weidong Zhang, Hong Chiang, Te Wen, Lulu Ye, Hai Lin, Haitan Xu, Qihuang Gong, and Guowei Lu "Exotic coupling between plasmonic nanoparticles through geometric configurations", Proc. SPIE 11904, Plasmonics VI, 119040W (9 October 2021); https://doi.org/10.1117/12.2599716

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