Topologically tuned terahertz confinement in a nonlinear photonic chip

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

doi:10.1038/s41377-022-00823-7

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Topologically tuned terahertz confinement in a nonlinear photonic chip

Articles

- Topologically tuned terahertz confinement in a nonlinear photonic chip
- Topologically tuned terahertz confinement in a nonlinear photonic chip
- LSA 2022年11卷第6期页码：1296-1303
- Affiliations：
  
  1.The MOE Key Laboratory of Weak-Light Nonlinear Photonics, TEDA Institute of Applied Physics and School of Physics, Nankai University, Tianjin 300457, China
  2.Innovation Laboratory of Terahertz Biophysics, National Innovation Institute of Defense Technology, 100071 Beijing, China
  3.Collaborative Innovation Center of Extreme Optics, Shanxi University 030006 Taiyuan, Shanxi, China
  4.INRS-EMT, 1650 Blvd. Lionel-Boulet, Varennes, QC J3X 1S2, Canada
- Author bio：
  
  Xinzheng Zhang (zxz@nankai.edu.cn)
  Jingjun Xu (jjxu@nankai.edu.cn)
  Zhigang Chen (zgchen@nankai.edu.cn)
- Funds：
- DOI：10.1038/s41377-022-00823-7
  中图分类号：
- 纸质出版日期：2022-06-30，
  
  网络出版日期：2022-05-23，
  
  收稿日期：2021-12-08，
  
  修回日期：2022-04-26，
  
  录用日期：2022-04-27
- Accepted：
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Topologically tuned terahertz confinement in a nonlinear photonic chip[J]. LSA, 2022,11(6):1296-1303.

Wang, J. Y. et al. Topologically tuned terahertz confinement in a nonlinear photonic chip. Light: Science & Applications, 11, 1296-1303 (2022).
Topologically tuned terahertz confinement in a nonlinear photonic chip[J]. LSA, 2022,11(6):1296-1303. DOI： 10.1038/s41377-022-00823-7.

Wang, J. Y. et al. Topologically tuned terahertz confinement in a nonlinear photonic chip. Light: Science & Applications, 11, 1296-1303 (2022). DOI： 10.1038/s41377-022-00823-7.

摘要

Abstract

Compact terahertz (THz) functional devices are greatly sought after for high-speed wireless communication

biochemical sensing

and non-destructive inspection. However

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 losses. Here

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 lattice. Experimentally 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 regimes. Such topological control of THz waves may bring about new possibilities in the realization of THz integrated circuits

promising for advanced photonic applications.

关键词

Keywords

references

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