Coupling of Photonic and Plasmonic Modes for Double Nanowire Cavities

We analyze the coupling between double nanowire cavities for both photonic modes and plasmonic modes. When the spacing between nanowires reduces, a redshift of the resonant frequency of the symmetric mode and a blueshift of the resonant frequency of the antisymmetric mode are observed. Compared to s...

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Bibliographic Details
Published in:Photonics 2023-04, Vol.10 (4), p.415
Main Authors: Peng, Xuanran, Liu, Jing, Kang, Yaru, Mao, Xu, Yan, Wei, Wang, Xiaohui, Liu, Kong, Xu, Rui, Yang, Fuhua, Li, Zhaofeng
Format: Article
Language:English
Subjects:
Blue shift
Cavities
cavity
Comparative analysis
Coupling
Holes
Laser arrays
Lasers
Methylene blue
Nanoparticles
Nanotechnology
nanowire
Nanowires
photonic
Photonics
plasmonic
Plasmonics
Q factor
Q factors
Radiation
Red shift
Resonant frequencies
Simulation
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Summary:We analyze the coupling between double nanowire cavities for both photonic modes and plasmonic modes. When the spacing between nanowires reduces, a redshift of the resonant frequency of the symmetric mode and a blueshift of the resonant frequency of the antisymmetric mode are observed. Compared to single nanowire cavity modes, the Q factors of antisymmetric supermodes of double nanowires can be improved by 51% for photonic modes and by 24% for plasmonic modes. The mechanisms of Q factor improvement for photonic modes and plasmonic modes are studied based on the field distribution of radiations from the modes. This paper may contribute to research and applications for double nanowire lasers and nanowire laser arrays.
ISSN:2304-6732
2304-6732
DOI:10.3390/photonics10040415