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Timing Recollision in Nonsequential Double Ionization by Intense Elliptically Polarized Laser Pulses
H Kang1,2, K Henrichs1, M Kunitski1
1Institut für Kernphysik, Goethe Universität Frankfurt, 60438 Frankfurt am Main, Germany.
Physical Review Letters
|June 16, 2018
Summary
Strong laser fields cause double ionization in neon, creating an asymmetry in electron and ion momentum. This asymmetry reveals subcycle dynamics, offering control over the ionization process.
Area of Science:
- Atomic Physics
- Quantum Mechanics
- Laser-Matter Interactions
Background:
- Strong field double ionization is a complex quantum phenomenon.
- Understanding electron and ion correlations is crucial for probing ionization dynamics.
- Elliptically polarized laser pulses introduce unique polarization effects.
Purpose of the Study:
- To investigate the correlated electron and doubly charged ion momentum spectra from strong field double ionization of neon.
- To analyze the influence of elliptically polarized laser pulses on ionization dynamics.
- To reveal the subcycle dynamics of the recollision process in double ionization.
Main Methods:
- Experimental measurement of correlated electron and doubly charged ion momentum spectra.
- Theoretical analysis using an intense elliptically polarized laser pulse.
- Application of a 3D semiclassical model to interpret experimental observations.
Main Results:
- Observed an ellipticity-dependent asymmetry in correlated electron and ion momentum distributions.
- Demonstrated that the observed asymmetry reflects subcycle dynamics of the recollision process.
- Provided a general physical picture for recollision impact double ionization with elliptical polarization.
Conclusions:
- The study reveals key insights into the dynamics of strong field double ionization.
- Elliptical polarization offers a pathway for ultrafast control over recollision dynamics.
- The findings contribute to a deeper understanding of laser-induced electron and ion emission.
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