Attosecond physics in optical near fields.

ABSTRACT: Attosecond science-the control of electrons by ultrashort laser pulses-is developing into lightfield-driven, or petahertz, electronics. Optical-field-driven nanostructures provide elements for such electronics, which rely on understanding electron dynamics in the optical near field. Here we report near-field-induced low-energy stripes in carrier-envelope-phase-dependent electron spectra-a spectral feature that appears in the direct electrons emitted from a strongly driven nanostructure. These stripes arise from the subcycle sensitivity of the ponderomotive acceleration of electrons injected into a strong near-field gradient by a few-cycle optical waveform. They allow the tracking of direct and rescattered electron emissions on subcycle timescales and provide access to the electron momentum

SUBMITTER: Heimerl J 

PROVIDER: S-EPMC12695665 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature