首页|Interface state-based bound states in continuum and below-continuum-resonance modes with high-Q factors in the rotational periodic system

Interface state-based bound states in continuum and below-continuum-resonance modes with high-Q factors in the rotational periodic system

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We have introduced a new approach to calculate the orbital angular momentum(OAM)of bound states in contin-uum(BICs)and below-continuum-resonance(BCR)modes in the rotational periodic system nested inside and outside by transforming the Bloch wave number from the translational periodic system.We extensively classify and study these BICs and BCR modes,which exhibit high-quality(high-Q)factors,in different regions relative to the interface of the system.These BICs and BCR modes with a high-Q factor have been studied in detail based on distinctive structural parameters and scattering theory.The outcomes of this research break the periodic limitation of interface state-based BICs,and realize more and higher symmetry interface state-based BICs and BCR modes.Moreover,we can control the region where light is captured by adjusting the frequency,and show that the Q factor of BICs is more closely related to the ordinal number of rings and the rotational symmetry number of the system.

bound states in the continuumbelow continuum resonance modeshigh-quality factors

杨嘉玲、史奥芊、彭宇宸、彭鹏、刘建军

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Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education,School of Physics and Electronics,Hunan University,Changsha 410082,China

Greater Bay Area Institute for Innovation,Hunan University,Guangzhou 511300,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Hunan ProvinceNatural Science Foundation of Hunan ProvinceScientific Research Foundation of Hunan Provincial Education DepartmentOpen Project of State Key Laboratory of Advanced Optical Communication Systems and Networks of ChinaGuangdong Basic and Applied Basic Research Foundation

61405058620750592017JJ20482020JJ416121A00132024GZKF202024A1515011353

2024

10.1088/1674-1056/ad4630

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(8)