<div class="csl-bib-body">
<div class="csl-entry">Hentschel, M., Kienberger, R., Spielmann, C., Reider, G., Milosevic, N., Brabec, T., Corkum, P. B., Heinzmann, U., Drescher, M., & Krausz, F. (2001). Attosecond metrology. <i>Nature</i>, <i>414</i>, 509–513. https://doi.org/10.1038/35107000</div>
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dc.identifier.issn
0028-0836
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/189510
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dc.description.abstract
The generation of ultrashort pulses is a key to exploring the dynamic behaviour of matter on ever-shorter timescales. Recent developments have pushed the duration of laser pulses close to its natural limit-the wave cycle, which lasts somewhat longer than one femtosecond (1 fs = 10-15 s) in the visible spectral range. Time-resolved measurements with these pulses are able to trace dynamics of molecular structure, but fail to capture electronic processes occurring on an attosecond (1 as = 10-18 s) timescale. Here we trace electronic dynamics with a time resolution of </= 150 as by using a subfemtosecond soft-X-ray pulse and a few-cycle visible light pulse. Our measurement indicates an attosecond response of the atomic system, a soft-X-ray pulse duration of 650 +/- 150 as and an attosecond synchronism of the soft-X-ray pulse with the light field. The demonstrated experimental tools and techniques open the door to attosecond spectroscopy of bound electrons.
