Nanoplasmonic electron acceleration by attosecond-controlled forward rescattering in silver clusters

Johannes Passig, Sergey Zherebtsov, Robert Irsig, Mathias Arbeiter, Christian Peltz, Sebastian Göde, Slawomir Skruszewicz, Karl-Heinz Meiwes-Broer, Josef Tiggesbäumker (), Matthias F. Kling () and Thomas Fennel ()
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Johannes Passig: Universität Rostock
Sergey Zherebtsov: Ludwig-Maximilians-Universität München
Robert Irsig: Universität Rostock
Mathias Arbeiter: Universität Rostock
Christian Peltz: Universität Rostock
Sebastian Göde: Universität Rostock
Slawomir Skruszewicz: Universität Rostock
Karl-Heinz Meiwes-Broer: Universität Rostock
Josef Tiggesbäumker: Universität Rostock
Matthias F. Kling: Ludwig-Maximilians-Universität München
Thomas Fennel: Universität Rostock

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract In the strong-field photoemission from atoms, molecules, and surfaces, the fastest electrons emerge from tunneling and subsequent field-driven recollision, followed by elastic backscattering. 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.

Date: 2017
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DOI: 10.1038/s41467-017-01286-w

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