M Nest et al 2008 New J. Phys. 10 025019 doi:10.1088/1367-2630/10/2/025019
Pump and probe ultrafast electron dynamics in LiH: a computational study
Focus on Attosecond PhysicsM Nest1, F Remacle2,3 and R D Levine3,4,5
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A time-dependent multiconfiguration method with a large electronic basis set is used to compute the response of all the electrons of LiH to a few-cycle intense pump field followed by a probe pulse. The ultrashort pump pulse excites a coherent superposition of stationary electronic states and, by changing the pump parameters such as intensity, duration, polarization and phase of carrier frequency, one can steer the motion of the electrons. Particular attention is given to the control provided by the polarization and by the phase. For example, a change in polarization is used to select an electronic wave packet that is rotating in a plane perpendicular to the bond or rotation in a plane containing the bond. The electronic wave packet can be probed by a delayed second pulse. This delayed probe pulse is also included in the Hamiltonian with the result that the frequency dispersed probe spectrum can be computed and displayed as a two-dimensional plot.
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Issue 2 (February 2008)
Received 28 September 2007
Published 29 February 2008
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Pump and probe ultrafast electron dynamics in LiH: a computational study
M Nest et al 2008 New J. Phys. 10 025019
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