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Nature 449, 997-999 (25 October 2007) | doi:10.1038/449997a; Published online 24 October 2007
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Attophysics: At a glance
David M. Villeneuve1
Abstract
Measurements on the attosecond timescale had been limited to the dynamics of electrons in an atomic gas. But a record has now been set in a quite different context — the photoemission of electrons from a surface.
The quest for faster and faster time-resolved measurements has reached a new level: Cavalieri et al. report (page 1029 of this issue)1 that they have measured a delay of 100 attoseconds in the emission of electrons ejected from a surface irradiated by light. This is not just the experiment with the best time resolution yet; it is also the first time that attosecond metrology has been applied to a solid, rather than a gaseous, system.
- David M. Villeneuve is at the National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6, Canada.
Email: david.villeneuve@nrc.ca
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