High-efficiency terahertz third harmonic generation from quasi-bound states in the continuum in permittivity-asymmetric hybrid metasurfaceGuangcheng Sun, Rui Wu, Yaohe Li, Gengyu Bai, Yongming Zhang, Suguo Chen, Sunchao Huang, Yang Zhao, Jiayong Han, Hui Hu and Yue WangEPJ Appl. Metamat., 13 (2026) 14DOI: https://doi.org/10.1051/epjam/2026005
