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Conferences > EQEC > 2017 > EG_4 > EG_4_2
  • 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference
  • (Optica Publishing Group, 2017),
  • paper EG_4_2

All-optical spatio-temporal control of electron emission from isolated dielectric nanospheres with two-color laser pulses

Sergey Zherebtsov, Qingcao Liu, Lennart Seiffert, Philipp Henning, Slawomir Skruszewicz, Philipp Rupp, Christian G. Schäfer, Alexander Kessel, Sergei Trushin, Eckart Rühl, Abdallah M. Azzeer, Josef Tiggesbäumker, Marcelo F. Ciappina, Markus Gallei, Thomas Fennel, and Matthias F. Kling

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Abstract

Field localization by nanostructures illuminated with laser pulses of well-defined waveform enables spatial-temporal tailoring of the near-fields for sub-cycle control of electron dynamics at the nanoscale [1]. Transition from the ponderomotive to sub-cycle acceleration regime of the near-field-driven electron emission was shown to be determined by the ratio of the near-field decay length and amplitude of the electron quiver motion [2]. Field-propagation-induced shaping of the near-field in turn has been utilized for size-dependent directional tuning of the electron emission from isolated nanospheres [3]. Here, we go beyond these studies and use intense 30 fs two-color laser pulses (780 nm/390 nm) to tailor the spatio-temporal near-fields of SiO2 nanoparticles, enabling the all-optical control of the electron emission direction.

© 2017 IEEE

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