A strategy to improve the robustness of bound states in the continuum  

作　　者：Peiwen Ren Zhuo Huang Renxian Gao Xiaoxiang Dong Guoya Sun Jian-Feng Li Zhilin Yang 

机构地区：[1]College of Physical Science and Technology,State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,College of Energy,Xiamen University,Xiamen 361005,China

出　　处：《Nano Research》2025年第2期826-832,共7页纳米研究(英文版)

基　　金：This work was supported by the National Key Research and Development Program of China(No.2021YFA1201502);Scientific and Technological Innovation 2030-"Quantum Communication and quantum computer"Major Project(No.2023ZD0300304);the National Natural Science Foundation of China(Nos.92161118,12174324,and 21925404)。

摘　　要：Bound states in the continuum(BICs)supported by dielectric metasurfaces have significantly propelled the progress in optical technologies,notably for manipulating potent light-matter interactions.However,achieving a robust quasi-BIC mode with high Q factor by adjusting geometric parameters remains a challenge,primarily the Q factors strongly depend on the asymmetricparameters andthestringentfabrication requirements.Here,we propose a novel strategy to enhance the robustness of the Q factor through the continuous excitation of the magnetic dipole mode with low energy loss.Through a specialized multi-cell structure,the nanoarrays can continuously excite the magnetic dipoles contributed by different structural components over a broad range of geometrical parameters,exhibiting exceptional robustness and high quality resonance.This work provides a theoretical scheme that offers new directions for obtaining robust high Q resonances and developing potential applications for high-performance optical devices.

关 键 词：bound states in the continuum(BICs) all-dielectric nanostructures magnetic dipole electric dipole robust high Q factor 

分 类 号：O57[理学—粒子物理与原子核物理]