Terahertz emission mediated by ultrafast time-varying metasurfaces

Tunesi, J, Peters, L, Totero Gongora, J S, Olivieri, L, Fratalocchi, A, Pasquazi, A and Peccianti, M (2021) Terahertz emission mediated by ultrafast time-varying metasurfaces. Physical Review Research, 3 (4). aL042006 1-6. ISSN 2643-1564

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Abstract

Systems with ultrafast time-varying dielectric properties represent an emerging physical framework. We demonstrate here the observation of subcycle dynamics interacting directly with an electromagnetic source comprised of morphologically constrained photoexcited carriers in a surface nanostructure. A transition to a metallic metasurface state occurs on time scales faster than the terahertz-field period, inducing large nonlinear ultrafast phase shifts in the terahertz emission and exposing an interesting physical setting.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 06 Oct 2021 07:54
Last Modified: 02 Mar 2022 12:47
URI: http://sro.sussex.ac.uk/id/eprint/102136

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