Author(s): Huang, KJ (Huang, Kejing); Zhang, JM (Zhang, Jiaming); Wang, WT (Wang, Wentao); Zhao, C (Zhao, Cong); Huang, R (Huang, Ran); Zhen, LP (Zhen, Liping); Luo, HG (Luo, Honggang); Liu, J (Liu, Jie); Zhang, YL (Zhang, Yongliang); Duan, JL (Duan, Jinglai)

Source: OPTICS LETTERS Volume: 47 Issue: 14 Pages: 3616-3619 DOI: 10.1364/OL.464600 Published: JUL 15 2022

Abstract: Nanowires (NWs) are essential building blocks of photonic devices for guiding light waves. However, the controlled synthesis of non-circular NWs remains challenging. Herein, we develop a bottom-up approach for the fabrication of high-quality elliptical gold NWs with finely tuned geometry engineering by using an advanced ion-track template technology. Compared to ordinary NWs, the rotational symmetry breaking leads to highly polarization-dependent plasmonic responses. Modal analysis shows that the lowest dipolar HE1 mode splits into two branches where the attenuation of the long-range branch decreases by 40%, while the short-range branch has a stronger enhanced near-field. Novel, to the best of our knowledge, plasmonic Fabry-Perot resonances on finite NWs are measured. Our method can be extended to fabricate non-circular NWs with other materials, holding potential for novel applications from quantum to collective scales. (C) 2022 Optica Publishing Group

Accession Number: WOS:000826474100061

PubMed ID: 35838744

Author Identifiers:

Author        Web of Science ResearcherID        ORCID Number

Zhang, Yongliang                  0000-0001-9419-6881

Zhang, Jiaming                  0000-0002-7896-7321

Duan, Jinglai                  0000-0002-9019-5088

ISSN: 0146-9592

eISSN: 1539-4794

Full Text: https://opg.optica.org/ol/fulltext.cfm?uri=ol-47-14-3616&id=479554