Mapping attosecond electron wave packet motion

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Journal titlePhysical Review Letters
Pages083003-1083003-4; # of pages: 4
Subjectbound states; molecule-photon collisions; optical harmonic generation; optical pulse generation; photoionisation; Schrodinger equation
AbstractAttosecond pulses are produced when an intense infrared laser pulse induces a dipole interaction between a sublaser cycle recollision electron wave packet and the remaining coherently related bound-state population. By solving the time-dependent Schrödinger equation we show that, if the recollision electron is extracted from one or more electronic states that contribute to the bound-state wave packet, then the spectrum of the attosecond pulse is modulated depending on the relative motion of the continuum and bound wave packets. When the internal electron and recollision electron wave packet counterpropagate, the radiation intensity is lower. We show that we can fully characterize the attosecond bound-state wave packet dynamics. We demonstrate that electron motion from a two-level molecule with an energy difference of 14 eV, corresponding to a period of 290 asec, can be resolved.
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AffiliationNational Research Council Canada; NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
NPARC number12327083
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Record identifierbb206e60-e88f-4121-ad30-44edaa7a3e75
Record created2009-09-10
Record modified2016-05-09
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