%0 Journal Article
%A Wirth, Adrian
%A Hassan, M. T.
%A Grguras, Ivanka
%A Gagnon, J.
%A Moulet, A.
%A Luu, T. T.
%A Pabst, Stefan
%A Santra, Robin
%A Alahmed, Z. A.
%A Azzeer, A. M.
%A Yakovlev, V. S.
%A Pervak, V.
%A Krausz, F.
%A Goulielmakis, E.
%A DESY
%T Synthesized Light Transients
%J Science
%V 334
%@ 0036-8075
%M PHPPUBDB-17976
%P 195
%D 2011
%X Manipulation of electron dynamics calls for electromagnetic forces that can be confined to and controlled over sub-femtosecond time intervals. Tailored transients of light fields can provide these forces. We report on the generation of subcycle field transients spanning the infrared, visible, and ultraviolet frequency regimes with a 1.5-octave three-channel optical field synthesizer and their attosecond sampling. To demonstrate applicability, we field-ionized krypton atoms within a single wave crest and launched a valence-shell electron wavepacket with a well-defined initial phase. Half-cycle field excitation and attosecond probing revealed fine details of atomic-scale electron motion, such as the instantaneous rate of tunneling, the initial charge distribution of a valence-shell wavepacket, the attosecond dynamic shift (instantaneous ac Stark shift) of its energy levels, and its few-femtosecond coherent oscillations.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:21903778
%U <Go to ISI:>//WOS:000295833600038
%R 10.1126/science.1210268
%U https://bib-pubdb1.desy.de/record/94718