A high figure of merit of phonon-polariton waveguide modes with hbn/SiO2/graphene /hBN ribs waveguide in mid-infrared range

Sheng, Zhou; Yue, Liu; Zhao, Yue; Jin, Gao; Zhang, Qiang; Fu, Shufang; Wang, Xiangguang; Wang, Xuan; Wang, Xuanzhang

doi:10.1016/j.heliyon.2024.e26727

Heliyon

2024

DOI: 10.1016/j.heliyon.2024.e26727

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A high figure of merit of phonon-polariton waveguide modes with hbn/SiO2/graphene /hBN ribs waveguide in mid-infrared range

Zhou Sheng,

Liu Yue,

Yue Zhao

et al.

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High quality factor of bound states in continuum in hBN metasurface

Sun,

Zhang,

Jin

et al. 2024

Journal of Applied Physics

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A bound state in the continuum (BIC) metasurface (MS) was designed to achieve an ultrahigh quality factor(Q factor) using natural hyperbolic materials, such as hexagonal boron nitride. To investigate the structure's dispersion and Q factor, a unit cell of the MS comprising semicircles and rectangles was designed. This MS structure supports symmetry-protected BICs and exhibits a Q factor of approximately 13 000 at 4.43964 × 1013 Hz. By breaking the MS symmetry, the BICs are converted into quasi-BICs, resulting in quasi-BIC resonance with a high Q factor. Further analysis of the reflection spectra and multipole theory indicates that the toroidal dipole (TD) has the most significant influence on the resonance. Thus, the symmetry-protected BIC can be transformed into the TD resonance with a Q factor by breaking symmetry.

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High quality factor of bound states in continuum in hBN metasurface

Sun,

Zhang,

Jin

et al. 2024

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

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A high figure of merit of phonon-polariton waveguide modes with hbn/SiO2/graphene /hBN ribs waveguide in mid-infrared range

Cited by 1 publication

References 56 publications

High quality factor of bound states in continuum in hBN metasurface

High quality factor of bound states in continuum in hBN metasurface

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