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End date: 2009 × Start date: 2000 × search.filters.applied.f.series: New Journal of Physics 9 (2007) × Subject: Femtosecond temporal resolution ×

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    Ultrafast optical excitations of metallic nanostructures: From light confinement to a novel electron source
    (College Park, MD : Institute of Physics Publishing, 2007) Ropers, C.; Elsaesser, T.; Cerullo, G.; Zavelani-Rossi, M.; Lienau, C.
    Combining ultrafast coherent spectroscopy with nano-optical microscopy techniques offers a wealth of new possibilities for exploring the structure and function of nanostructures. In this paper, we describe newly developed nano-optical methods based on short-pulse laser sources with durations in the 10 fs regime. These techniques are used to unravel some of the intricate dynamics of elementary excitations in metallic nanostructures. Specifically, we explore light localization and storage in plasmonic crystals, demonstrate field enhancement and second harmonic generation from metallic nanotips and describe a novel nanometre-sized source of electron pulses. The rapid progress in this area offers exciting new prospects for probing and controlling electron dynamics in metallic nanostructures with femtosecond temporal and nanometre spatial resolution. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.