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Ultrasensitive tunable terahertz lithium niobate metasurface sensing based on bound states in the continuum 被引量:1

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摘要 Lithium niobate’s substantial nonlinear optical and electro-optic coefficients have recently thrust it into the limelight.This study presents a thorough review of bound states in the continuum(BICs)in lithium niobate metasurfaces,also suggesting their potential for sensing applications.We propose an all-dielectric tunable metasurface that offers high Q factor resonances in the terahertz range,triggered by symmetry-protected BICs.With exceptional sensitivity to changes in the refractive index of the surrounding medium,the metasurface can reach a sensitivity as high as 947 GHz/RIU.This paves the way for ultrasensitive tunable terahertz sensors,offering an exciting path for further research.
出处 《Photonics Research》 SCIE EI CAS CSCD 2023年第12期2168-2178,共11页 光子学研究(英文版)
基金 National Natural Science Foundation of China(52105595) Natural Science Foundation of Zhejiang Province(Q21F050011)。
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