Tunable lithium niobate metasurfaces for phase-only modulation based on quasi-bound states in the continuum  

作　　者：Ruoying KANYANG Cizhe FANG Yibo WANG Xiaoxi LI Xiangyu ZENG Yan LIU Yue HAO Genquan HAN 

机构地区：[1]School of Microelectronics,Xidian University,Xi'an 710071,China [2]Hangzhou Institute of.Technology,Xidian University,Hangzhou 311200,China

出　　处：《Science China(Information Sciences)》2024年第11期371-372,共2页中国科学（信息科学）（英文版）

基　　金：supported by National Key R&D Program of China(Grant No.2023YFB4402303);National Natural Science Foundation of China(Grant Nos.62090033,92364204,92264202);the Major Program of Zhejiang Natural Science Foundation(Grant No.LDT23F04024F04);the Fundamental Research Funds for the Central Universities(Grant No.XJSJ24088);the Postdoctoral Fellowship Program of Shaanxi Province(Grant No.2023BSHEDZZ182)。

摘　　要：Tunable Huygens'metasurfaces possess almost arbitrary control over the wavefront,enabling engineered refraction,deflection,focusing,and polarization control in optical systems[1].However,phase-only modulation remains challenging due to the strong mode loss[2].The concept of bound states in the continuum(BICs)has been shown to serve as an intriguing interference mechanism for suppressing radiation loss[3].The combination of BICs and Huygens'regime offers possibilities to optimize the performance of tunable Huygens'metasurface[4].

关 键 词：POLARIZATION TUNABLE PHASE 

分 类 号：O43[机械工程—光学工程]