• Tatjana B. Miladinović Institute for Information Technologies Kragujevac, University of Kragujevac
  • Nebojša S. Danilović Faculty of Science, University of Kragujevac, Kragujevac, Serbia
Keywords: Tunneling ionization, Transition rate, Radially polarized LG (0, 1)* spiral-phase mode


We discussed the tunneling ionization of an Argon atom placed in a strong low-frequency field of Ti: Sapphire laser. The transition rate of the electron obtained with radial polarization LG (0, 1)* spiral-phase mode field distribution included are compared to the basic transition rate. All analyses are given in the frame of the three different ionization theories – Keldysh, PPT, and ADK. We demonstrated that the tunneling transition rate is sensitive to laser polarization and a set field distribution. As well as changes in the azimuthal angle as a parameter on which the given distribution depends.


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