Classical effects of laser pulse duration on strong-field double
ionization
Physical Review Letters, 95 (19):
- (November 2005)981BU Times Cited:13 Cited References Count:32.Abstract
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.