Few-cycle plasmon oscillations controlling photoemission from metal nanoparticles

Journal Article · Mon Jan 05 04:00:00 EST 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4905464· OSTI ID:22395672

Földi, Péter ^[1]; Márton, István; Német, Nikolett; Dombi, Péter ^[2]; Ayadi, Viktor ^[1]

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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)

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.

• OSTI ID: 22395672
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 1 Vol. 106; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ELECTRIC FIELDS
ELECTRONS
EXCITATION
LASER RADIATION
METALS
NANOPARTICLES
NANOSTRUCTURES
OSCILLATIONS
PHOTOCATHODES
PHOTOEMISSION
PLASMONS
SURFACES