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14 March 2013 Probing ultrafast electron dynamics in condensed matter with attosecond photoemission
Stefan Neppl, Ralph Ernstorfer, Adrian L. Cavalieri, Johannes V. Barth, Dietrich Menzel, Ference Krausz, Peter Feulner, Reinhard Kienberger
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Proceedings Volume 8623, Ultrafast Phenomena and Nanophotonics XVII; 862312 (2013) https://doi.org/10.1117/12.2003050
Event: SPIE OPTO, 2013, San Francisco, California, United States
Abstract
We discuss experiments that address the ultrafast dynamics inherent to the photoemission process in condensed matter. In our experimental approach, an extreme ultraviolet attosecond light pulse launches photoelectron wave packets inside a solid. The subsequent emission dynamics of these photoelectrons is probed with the light field of a phase-stabilized near-infrared laser pulse. This technique is capable of resolving subtle emission delays of only a few attoseconds between electron wave packets that are released from different energy levels of the crystal. For simple metals, we show that these time shifts may be interpreted as the real-time observation of photoelectrons propagating through the crystal lattice prior to their escape into vacuum. The impact of adsorbates on the observed emission dynamics is also investigated.
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Stefan Neppl, Ralph Ernstorfer, Adrian L. Cavalieri, Johannes V. Barth, Dietrich Menzel, Ference Krausz, Peter Feulner, and Reinhard Kienberger "Probing ultrafast electron dynamics in condensed matter with attosecond photoemission", Proc. SPIE 8623, Ultrafast Phenomena and Nanophotonics XVII, 862312 (14 March 2013); https://doi.org/10.1117/12.2003050
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KEYWORDS
Extreme ultraviolet
Near infrared
Solids
Oxygen
Crystals
Magnesium
Metals
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