Generation of fast photoelectrons in strong-field emission from metal nanoparticles.

ABSTRACT: We investigated the generation and control of fast photoelectrons (PEs) by exposing plasmonic nanoparticles (NPs) to short infrared (IR) laser pulses with peak intensities between 10¹² and 3 × 10¹³ W/cm². Our measured and numerically simulated PE momentum distributions demonstrate the extent to which PE yields and cutoff energies are controlled by the NP size, material, and laser peak intensity. For strong-field photoemission from spherical silver, gold, and platinum NPs with diameters between 10 and 100 nm our results confirm and surpass extremely high PEs cutoff energies, up to several hundred times the incident laser-pulse ponderomotive energy, found recently for gold nanospheres [Saydanzad et al., Nanophotonics 12, 1931 (2023)]. As reported previ

SUBMITTER: Saydanzad E 

PROVIDER: S-EPMC12038575 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature