Terahertz emission mediated by ultrafast time-varying metasurfaces
Gongora, J. S. Totero
KAUST DepartmentComputer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Electrical and Computer Engineering Program
PRIMALIGHT Research Group
Permanent link to this recordhttp://hdl.handle.net/10754/672914
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AbstractSystems 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.
CitationTunesi, J., Peters, L., Totero Gongora, J. S., Olivieri, L., Fratalocchi, A., Pasquazi, A., & Peccianti, M. (2021). Terahertz emission mediated by ultrafast time-varying metasurfaces. Physical Review Research, 3(4). doi:10.1103/physrevresearch.3.l042006
SponsorsJ.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.
PublisherAmerican Physical Society (APS)
JournalPhysical Review Research
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