Active high-Q dielectric terahertz supercavities

Han, SongCong, LongqingSrivastava, Yogesh KumarQiang, BoRybin, Mikhail V.Lim, Wen XiangWang, Qi JieKivshar, Yuri S.Singh, Ranjan2025-12-312025-12-319781943580422ORCID:/0000-0002-3410-812X/work/163398014https://hdl.handle.net/1885/733797549We report the observation of extremely high-quality factors in all-dielectric subwavelength terahertz metasurfaces. We further demonstrate an active ultrafast switching of the high-Q resonances via direct optical excitation of the supercavities.enPublisher Copyright: © 2018 OSA.Active high-Q dielectric terahertz supercavities2018-08-0685052572147