Quasi-static tunnelling and multiphoton processes in the ionization of Ar and Xe using intense femtosecond laser pulses
The ionization of Ar and Xe in a dichroic pulsed laser field, comprising the fundamental and second harmonic of a Ti:sapphire laser, was studied. The ion yield was found to depend on the angle between the polarization vectors of the two fields. The dependence was explained by proposing a model that considered the ionization process to be resulting from the action of two independent mechanisms, namely quasi-static tunnelling and multiphoton ionization.
Journal of Physics B Atomic Molecular Physics
- Pub Date:
- August 2010