We 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. © 2018 OSA.

Yogesh Kumar Srivastava

Department of Physics

S. Han

L. Cong

B. Qiang

M.V. Rybin

W.X. Lim

Q.J. Wang

Y.S. Kivshar

R. Singh

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2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings

Active high-Q dielectric terahertz supercavities

Journal	2018 Conference on Lasers and Electro-Optics, CLEO 2018 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.