Journal
NATURE COMMUNICATIONS
Volume 8, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-017-01286-w
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Funding
- Deutsche Forschungsgemeinschaft [SFB 652, SPP 1840]
- Heisenberg Fellowship [FE 1120/4]
- EU via the ERC grant ATTOCO [307203]
- DFG via the excellence cluster Munich Centre for Advanced Photonics
- North German Supercomputing Alliance (HLRN) [mvp00010]
- European Research Council (ERC) [307203] Funding Source: European Research Council (ERC)
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In the strong-field photoemission from atoms, molecules, and surfaces, the fastest electrons emerge from tunneling and subsequent field-driven recollision, followed by elastic back-scattering. This rescattering picture is central to attosecond science and enables control of the electron's trajectory via the sub-cycle evolution of the laser electric field. Here we reveal a so far unexplored route for waveform-controlled electron acceleration emerging from forward rescattering in resonant plasmonic systems. We studied plasmon-enhanced photoemission from silver clusters and found that the directional acceleration can be controlled up to high kinetic energy with the relative phase of a two-color laser field. Our analysis reveals that the cluster's plasmonic near-field establishes a sub-cycle directional gate that enables the selective acceleration. The identified generic mechanism offers robust attosecond control of the electron acceleration at plasmonic nanostructures, opening perspectives for laser-based sources of attosecond electron pulses.
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