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A: Fachverband Atomphysik
A 6: Interaction with strong or short laser pulses II
A 6.5: Talk
Tuesday, March 15, 2022, 11:45–12:00, A-H1
Time Delay and Nonadiabatic Calibration of the Attoclock and TDSEQ result — •Ossama Kullie1 and Igor Ivanov2 — 1Theoretical Physics, Institute of Physics, University of Kassel — 2Centre for Relativistic Laser Science, Gwangju, Republic of Korea
The measurement of the tunneling time in attosecond experiments, termed attoclock, triggered a hot debate about the tunneling time,the role of time in quantum mechanics and the separation of the interaction with the laser pulse into two regimes of a different character, the multiphoton and the tunneling ionization. In earlier works of the the adiabatic field calibration our real tunneling time showed a good agreement with the experimental data of the attoclock [1]. In the present work [1], we show that our model can explain the experimental results in the nonadiabatic field calibration, where we reach a good agreement with the experimental data of Hofmann et al [2]. Moreover, our result is confirmed by a new numerical integration of the Time-dependent Shrödinder equation, see Ivanov et al [2]. Our model is appealing because it offers a clear picture of the multiphoton and tunneling parts. Surprisingly, at a field strength F < Fa (the atomic field strength) the model always indicates a time delay with respect to the lower quantum limit at F=Fa. Its saturation at the adiabatic limit explains the well-known Hartman effect or Hartman paradox. [1] O. Kullie arXiv:2005.09938v3, O. Kullie PRA 92, 052118, 2015. [2] Iogr Ivanov et al, J. of Mod. Opt. 66, 1052, 2019. [3] Phys. Rev. A 89, 021402, 2014.