Dynamics of Correlated Double-Ionization of Two-Electron Quantum Dots in Laser Fields

Using an ab initio, time-dependent calculational method, we study the non-linear dynamics of a two-electron quantum dot in the presence of ultrashort Thz laser pulses. The analysis of the contribution of the various partial waves to two-electron joint radial and energy distribution patterns revealed...

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Bibliographic Details
Published in:Materials 2023-02, Vol.16 (4), p.1405
Main Authors: Prior, Adam, Nikolopoulos, Lampros A A
Format: Article
Language:English
Subjects:
Analysis
Electrons
Energy
Energy distribution
Ionization
Lasers
Mathematical analysis
Nonlinear dynamics
Optical properties
Photons
Quantum dots
Spectrum analysis
Wave packets
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Summary:Using an ab initio, time-dependent calculational method, we study the non-linear dynamics of a two-electron quantum dot in the presence of ultrashort Thz laser pulses. The analysis of the contribution of the various partial waves to two-electron joint radial and energy distribution patterns revealed strongly correlated electron ejection channels. In the double-ionization process, regardless of the photon energy, the two-electron wave packets are born and remain concentrated until the pulse's peak; at later times, and depending on the photon energy of the field, distinctly different patterns emerge. Our calculations also showed the gradual transition of the radial and energy patterns from a single-peak to a doubly peaked structure, associated with the direct and the sequential double-ionization mechanisms, respectively.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16041405