Abstract:The response of metal
nanostructures to optical excitation leads
to localized surface plasmon (LSP) generation with nanoscale field
confinement driving applications in, for example, quantum optics and
nanophotonics. Field sampling in the terahertz domain has had a tremendous
impact on the ability to trace such collective excitations. Here,
we extend such capabilities and introduce direct sampling of LSPs
in a more relevant petahertz domain. The method allows to measure
the LSP field in arbitrary nanostructures… Show more
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