Transient optical symmetry breaking for ultrafast broadband dichroism in plasmonic metasurfaces

  title={Transient optical symmetry breaking for ultrafast broadband dichroism in plasmonic metasurfaces},
  author={Andrea Schirato and Margherita Maiuri and Andrea Toma and Silvio Fugattini and Remo Proietti Zaccaria and Paolo Laporta and Peter J Nordlander and Giulio Cerullo and Alessandro Alabastri and Giuseppe Della Valle},
  journal={arXiv: Optics},
Ultrafast nanophotonics is an emerging research field aimed at the development of nanodevices capable of light modulation with unprecedented speed. A promising approach exploits the optical nonlinearity of nanostructured materials (either metallic or dielectric) to modulate their effective permittivity via interaction with intense ultrashort laser pulses. While the ultrafast temporal dynamics of such nanostructures following photoexcitation has been studied in depth, sub-ps transient spatial… 
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