Coherent control for the spherical symmetric box potential in short and intensive XUV laser fields

Imre Barna 1  and Péter Dombi 2
  • 1 Atomic Energy Research Institute of the Hungarian Academy of Sciences, (KFKI-AEKI), H-1525, Budapest, P.O. Box 49, Hungary
  • 2 Research Institute for Solid State Physics and Optics of the Hungarian Academy of Sciences, (KFKI-SZFKI), H-1525, Budapest, P.O. Box 49, Hungary

Abstract

Coherent control calculations are presented for a spherically symmetric box potential for non-resonant two photon transition probabilities. With the help of a genetic algorithm (GA), the population of the excited states are maximized and minimized. The external driving field is a superposition of three intensive extreme ultraviolet (XUV) linearly polarized laser pulses with different frequencies in the femtosecond duration range. We solved the quantum mechanical problem within the dipole approximation. Our investigation clearly shows that the dynamics of the electron current has a strong correlation with the optimized and neutralizing pulse shape.

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