Terahertz emission mediated by ultrafast time-varying metasurfaces

J. Tunesi, L. Peters, J. S. Totero Gongora, L. Olivieri, Andrea Fratalocchi, A. Pasquazi, M. Peccianti

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


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 languageEnglish (US)
JournalPhysical Review Research
Issue number4
StatePublished - Oct 18 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-10-22
Acknowledgements: J.T. acknowledges the support of the Engineering and Physical Sciences Research Council (EPSRC) through Studentship No. EP/N509784/1. J.S.T.G. acknowledges fundingfrom the Leverhulme Trust (Leverhulme Early Career Fellowship No. ECF-2020-537). A.P. acknowledges the support of the Engineering and Physical Research Council (EPSRC), Industrial Innovation Fellowship Programme, under Grant No. EP/S001018/1. This project received funding from the European Research Council (ERC) under the European Union’s
Horizon 2020 Research and Innovation Programme Grant Agreements No. 725046 and No. 851758.


Dive into the research topics of 'Terahertz emission mediated by ultrafast time-varying metasurfaces'. Together they form a unique fingerprint.

Cite this