Topologically tuned terahertz confinement in a nonlinear photonic chip

作     者：Jiayi Wang Shiqi Xia Ride Wang Ruobin Ma Yao Lu Xinzheng Zhang Daohong Song Qiang Wu Roberto Morandotti Jingjun Xu Zhigang Chen Jiayi Wang;Shiqi Xia;Ride Wang;Ruobin Ma;Yao Lu;Xinzheng Zhang;Daohong Song;Qiang Wu;Roberto Morandotti;Jingjun Xu;Zhigang Chen

作者机构：The MOE Key Laboratory of Weak-Light Nonlinear PhotonicsTEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300457China Innovation Laboratory of Terahertz BiophysicsNational Innovation Institute of Defense Technology100071 BeijingChina Collaborative Innovation Center of Extreme OpticsShanxi University030006 TaiyuanShanxiChina INRS-EMT1650 Blvd.Lionel-BouletVarennesQC J3X 152Canada 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2022年第11卷第6期

页      面：1296-1303页

核心收录：

学科分类：080805[工学-电工理论与新技术] 080904[工学-电磁场与微波技术] 0808[工学-电气工程] 080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：This work was supported by the National Key Research and Development Program of China(2017YFA0303800,2017YFA0305100) PCSIRT(IRT_13R29) Higher Education Discipline Innovation Project(B07013) the National Natural Science Foundation of China(12134006,12074201,11922408) the China Postdoctoral Science Foundation(BX2021134,2021M701790) as well as NSERC and the CRC program in Canada 

主　　题：nonlinear realization wedge 

摘      要：Compact terahertz(THz)functional devices are greatly sought after for high-speed wireless communication,biochemical sensing,and non-destructive ***,controlled THz generation,along with transport and detection,has remained a challenge especially for chip-scale devices due to low-coupling efficiency and unavoidable absorption ***,based on the topological protection of electromagnetic waves,we demonstrate nonlinear generation and topologically tuned confinement of THz waves in an engineered lithium niobate chip forming a wedge-shaped Su-Schrieffer-Heeger *** measured band structures provide direct visualization of the THz localization in the momentum space,while robustness of the confined mode against chiral perturbations is also analyzed and compared for both topologically trivial and nontrivial *** topological control of THz waves may bring about new possibilities in the realization of THz integrated circuits,promising for advanced photonic applications.