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.
|Original language||English (US)|
|Journal||Physical Review Research|
|State||Published - Oct 18 2021|
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Dataset for: Terahertz Emission Mediated for Ultrafast Time-Varying Metasurfaces
Fratalocchi, A. (Creator), Tunesi, J. (Creator), Peters, L. (Creator), Gongora, J. S. T. (Creator), Olivieri, L. (Creator), Pasquazi, A. (Creator) & Peccianti, M. (Creator), University of Sussex, 2021
DOI: 10.25377/sussex.16732690.v1, http://hdl.handle.net/10754/687062