Double Fano resonances in nanoring cavity dimers: The effect of plasmon hybridization between dark subradiant modes
Source abstract
Abstract
Dark mode which is subradiant plays a key role in the generation of Fano effect. This study proposes that plasmon interaction between dark modes is a favorable method to generate multiple Fano resonances, where plasmon hybridization leads to the formation of a subradiant bonding and a subradiant antibonding combination. It demonstrates that a concentric ring/ring cavity dimer introduces interactions that render bonding quadrupolar ring mode dipole active, resulting in a pronounced Fano resonance. The corresponding antibonding quadrupolar ring mode is excited in a symmetry breaking nonconcentric cavity dimer, and double Fano resonances appear in the spectra.
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Research context
OpenAlex topics: Plasmonic and Surface Plasmon Research · Photonic and Optical Devices · Gold and Silver Nanoparticles Synthesis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Taiyuan University of Technology 1 Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education, , Taiyuan 030024, China
Taiyuan University of Technology 2 Department of Physics and Optoelectronics, , Taiyuan 030024, China
Huazhong University of Science and Technology 3 Wenhua College, , Wuhan 430074, China
Funding
National Natural Science Foundation of China
References (58)
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