Classical Effects of Laser Pulse Duration on Strong-field Double Ionization

Details Classical Effects of Laser Pulse Duration on Strong-field Double Ionization Classical Effects of Laser Pulse Duration on Strong-field Double Ionization

2005-07-25

arxiv.org/abs/physics/0507175v1

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevLett.95.193002

We use classical electron ensembles and the aligned-electron approximation to examine the effect of laser pulse duration on the dynamics of strong-field double ionization. We cover the range of intensities $10^{14}-10^{16} W/cm^2$ for the laser wavelength 780 nm. The classical scenario suggests that the highest rate of recollision occurs early in the pulse and promotes double ionization production in few-cycle pulses. In addition, the purely classical ensemble calculation predicts an exponentially decreasing recollision rate with each subsequent half cycle. We confirm the exponential behavior by trajectory back-analysis.

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