Attosecond dynamics of light-induced resonant hole transfer in high-order-harmonic generation

Abstract

We present a study of high-order-harmonic generation (HHG) assisted by extreme ultraviolet (XUV) attosecond pulses, which can lead to the excitation of inner-shell electrons and the generation of a second HHG plateau. With the treatment of a one-dimensional model of krypton, based on time-dependent configuration interaction singles (TDCIS) of an effective two-electron system, we show that the XUV-assisted HHG spectrum reveals the duration of the semiclassical electron trajectories. The results are interpreted by the strong-field approximation (SFA) and the importance of the hole transfer during the tunneling process is emphasized. Finally, coherent population transfer between the inner and outer holes with attosecond pulse trains is discussed.

13 pages, 8 figures

References in corpus (4)

• Bright Coherent Ultrahigh Harmonics in the keV X-Ray Regime from Mid-Infrared Femtosecond Lasers
• Population transfer between two quantum states by piecewise chirping of femtosecond pulses: Theory and experiment
• Nonsequential Double Recombination in Intense Laser Fields
• Theoretical Study of Molecular Electronic and Rotational Coherences by High-Harmonic Generation