Freestanding metamaterial with constant coupling response for terahertz flexible functional devices  

作　　者：QIUMING ZENG TINGTING SHI YI HUANG SHUNCONG ZHONG FUWEI SUN CHENGLONG GUAN JIANXIONG CHEN TINGLING LIN YUJIE ZHONG YONGLIN HUANG 

机构地区：[1]Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing,School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108,China [2]Institute of Precision Instrument and Intelligent Measurement&Control,Fuzhou University,Fuzhou 350108,China [3]School of Economics and Management,Minjiang University,Fuzhou 350108,China

出　　处：《Photonics Research》2025年第1期177-186,共10页光子学研究(英文版)

基　　金：National Natural Science Foundation of China(52275096,72304127);Fujian Provincial Major Research Project(2022HZ024005);Science and Technology Planning Project of Fuzhou(2022-P-022);Natural Science Foundation of Fujian Province(2022J01071).

摘　　要：Metamaterials(MMs)have become increasingly prominent in terahertz flexible devices.However,bending deformation often alters the structure of the unit,which affects the response performance and stability of MMs.Here,a metal-aperture metamaterial(MA-MM)utilizing the strong coupling effect induced by two resonance modes is innovatively proposed to address the mentioned limitations.Specifically,it is found that the coupling state between multiple resonance modes remains consistent at different bending angles.Under these circumstances,the generated Rabi splitting peak presents stable response performance even under low resonance intensity caused by excessive deformation.The experimental results demonstrate that despite the amplitude of two resonant peaks decreasing significantly by 87.6%,the Q-factor of the Rabi splitting only reduced by 14.8%.Furthermore,armed with the response mode of the Rabi splitting being unaffected by plasma excitation range,the designed MA-MMs are able to maintain constant Q-factors and frequencies on curved surfaces of varying sizes.These findings exhibit the characteristics of electromagnetic response for multi-mode resonance-coupled MAMMs on different curved surfaces,presenting a novel design approach for terahertz flexible functional devices.

关 键 词：coupling SPLITTING CONSTANT 

分 类 号：O441.4[理学—电磁学]