Dresden 2009 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 27: Poster Session I (Methods: Scanning probe techniques; Methods: Atomic and electronic structure; Methods: Molecular simulations and statistical mechanics; Oxides and Insulators: Clean surfaces; Oxides and Insulators: Adsorption; Oxides and Insulators: Epitaxy and growth; Semiconductor substrates: Clean surfaces; Semiconductor substrates: Epitaxy and growth; Semiconductor substrates: Adsorption; Nano- optics of metallic and semiconducting nanostructures; Electronic structure; Methods: Electronic structure theory; Methods: other (experimental); Methods: other (theory); Solutions on surfaces; Epitaxial Graphene; Surface oder interface magnetism; Phase transitions; Time-resolved spectroscopies)
O 27.66: Poster
Dienstag, 24. März 2009, 18:30–21:00, P2
attosecond technology towards combining ultrahigh spatiotemporal resolution * nanoplasmonic optical field microscopy — •jingquan lin1, adrian wirth2, soo chew1, nils weber3, michael merkel3, matthias kling2, mark stockman4, ferenc krausz1,2, and ulf kleineberg1 — 1Faculty of Physik, LMU, Garching,Germany — 2Max Plank Institute of Quantenoptics, Garching, Germany — 3Focus Gmbh, Huestetten Kesselbach, Germany — 4Georgia State University,Atlanta, USA
Nanoplasmonics deals with collective electronic dynamics on the surface of metal nanostructures, which arise as a result of resonant excitations of surface plasmons by light pulse. Because of their broad spectral bandwidth, surface plasmons undergo ultrafast dynamics with timescales as short as a few hundred attoseconds. An approach, which combines photoelectron emission microscopy and attosecond streaking spectroscopy and will provide direct, non-invasive access to the nanoplasmonic collective dynamics with nanometre-scale spatial resolution and temporal resolution on the order of 100 attoseconds, has been proposed. To implement the approach, ToF-PEEM with 25 nm spatial resolution and 50 meV energy resolution has been developed and characterized by use of 400 nm/70ps diode laser. First experimental steps towards time-resolved 2PPE photoemission microscopy as well as vis-pump/XUV-prrobe attosecond microscopy to measure the temporal evolution of localized optical fields will be described.