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1 February 2024 Study on high-Q supercavity mode in spoof localized surface plasmon structures
Wenyao Zou, Chenchen Li, Jingjing Zhang
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Proceedings Volume 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023); 130681H (2024) https://doi.org/10.1117/12.3016532
Event: Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 2023, Hefei, China
Abstract
We report experimentally high-Q resonances arising from quasi-bound states in the continuum (quasi-BICs), supported by spoof localized surface plasmon (SLSP) structures with broken symmetry. The influence of structural asymmetric parameters on the Q-factors of SLSP resonance is studied with numerical simulations and experiments, and the supercavity mode with small spectral width is observed as the central displacement of the SLSP structure is approaching zero. Our investigation has demonstrated a new mechanism in suppressing the radiation loss of SLSP structures, holding promise for sensing applications with high sensitivity.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Wenyao Zou, Chenchen Li, and Jingjing Zhang "Study on high-Q supercavity mode in spoof localized surface plasmon structures", Proc. SPIE 13068, Fifth International Conference on Optoelectronic Science and Materials (ICOSM 2023), 130681H (1 February 2024); https://doi.org/10.1117/12.3016532
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KEYWORDS
Plane waves
Surface plasmons
Absorption
Resonators
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