Near-infrared plasma cavity metasurface with independently tunable double Fano resonances

Sun, Yuanhe; Zhang, Lei; Shi, Hao; Cao, Shuqi; Shen, Yang; Wu, Yanqing

doi:10.1016/j.rinp.2021.104204

Cited by 13 publications

(1 citation statement)

References 31 publications

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“…It originates from the quantum interference phenomenon caused by the interaction between the continuous state and the discrete state in atomic physics [ 1 , 2 , 3 ]. A large number of nano-metal patterns have been verified to achieve effective Fano resonance [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. The one-dimensional grating structure plays an important role in the metasurface.…”

Section: Introductionmentioning

confidence: 99%

Fano-Like Resonance of Heat-Reconfigurable Silicon Grating Metasurface Tuned by Laser-Induced Graphene

Huang

Zhu

et al. 2023

Nanomaterials

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We propose a heat-reconfigurable metasurface composed of the silicon-based gold grating. The asymmetric Fano-like line shape is formed due to the mutual coupling of the local surface plasmon (LSP) in the gap between the two layers of Au gratings and the surface propagating plasmon (SPP) on the surface of the Au gratings. Then, we effectively regulate the Fano resonance by applying a bias voltage to laser-induced graphene (LIG), to generate Joule heat, so that the resonant dip of one mode of the Fano resonance can shift up to 28.5 nm. In contrast, the resonant dip of the other mode barely changes. This effectively regulates the coupling between two resonant modes in Fano resonance. Our study presents a simple and efficient method for regulating Fano-like interference in the near-infrared band.

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