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Title: Few-cycle plasmon oscillations controlling photoemission from metal nanoparticles

Few-cycle optical excitation of nanosystems holds promise of fundamental discoveries and applications in ultrafast nanoscience, the development of nanostructured photocathodes, and many more. For these, surface plasmon generation on unprecedented timescales needs to be controlled. For this, few-cycle plasmon oscillations on a metal nanoparticle can be generated by keeping considerable electric field enhancement factors. As an initial application of such a high spatiotemporal localization of an ultrashort laser pulse, we numerically demonstrate the control of photoelectrons on a true sub-fs timescale in nanometric spatial domains. We show that it is only off-resonant nanoparticles that can provide few-cycle plasmons and electron control on this timescale.
Authors:
 [1] ; ; ;  [2] ;  [1] ;  [3]
  1. Department of Theoretical Physics, University of Szeged, Tisza Lajos körút 84, 6720 Szeged (Hungary)
  2. MTA Lendület Ultrafast Nanooptics Group, Wigner Research Center for Physics, 1121 Budapest (Hungary)
  3. (Hungary)
Publication Date:
OSTI Identifier:
22395672
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 1; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ELECTRIC FIELDS; ELECTRONS; EXCITATION; LASER RADIATION; METALS; NANOPARTICLES; NANOSTRUCTURES; OSCILLATIONS; PHOTOCATHODES; PHOTOEMISSION; PLASMONS; SURFACES