Enhanced cutoff energies for direct and rescattered strong-field photoelectron emission of plasmonic nanoparticles.

ABSTRACT: The efficient generation, accurate detection, and detailed physical tracking of energetic electrons are of applied interest for high harmonics generation, electron-impact spectroscopy, and femtosecond time-resolved scanning tunneling microscopy. We here investigate the generation of photoelectrons (PEs) by exposing plasmonic nanostructures to intense laser pulses in the infrared (IR) spectral regime and analyze the sensitivity of PE spectra to competing elementary interactions for direct and rescattered photoemission pathways. Specifically, we measured and numerically simulated emitted PE momentum distributions from prototypical spherical gold nanoparticles (NPs) with diameters between 5 and 70 nm generated by short laser pulses with peak intensities of 8.0 × 10¹² and 1.2 × 10

SUBMITTER: Saydanzad E 

PROVIDER: S-EPMC11501197 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature