Spatiotemporal imaging of plasmonic fields near nanoparticles below the diffraction limit
Date
2018-12-19
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Optically induced collective conduction-electron oscillations can generate intense plasmonic fields near metallic nanoparticles. We suggest a method for reconstructing such nanoplasmonic fields with nanometer spatial and sub-femtosecond temporal resolution from streaked photoemission spectra. Applying this imaging scheme to Au nanospheres, we demonstrate the accurate spatiotemporal reconstruction of the plasmonic near-field distribution in comparison with the directly calculated plasmonic field.