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Electron spin fluctuation in intense laser fields
Youssef Korani1, Hassan Sabzyan
1Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Islamic Republic of Iran. sabzyan@sci.ui.ac.ir.
Physical Chemistry Chemical Physics : PCCP
|November 16, 2017
Summary
Laser pulse properties influence spin dynamics in molecular ions like HeH2+ and LiH3+. Spin-orbit coupling affects spin fluctuation in highly charged ions, showing sensitivity to laser polarization and initial states.
Area of Science:
- Quantum Chemistry
- Atomic and Molecular Physics
- Laser-Matter Interactions
Background:
- Understanding spin dynamics in molecular ions is crucial for quantum technologies.
- Laser pulses offer precise control over electronic and spin states.
Purpose of the Study:
- Investigate laser pulse parameters (orientation, wavelength, phase) effects on spin fluctuation in HeH2+ and LiH3+.
- Examine spin-orbit coupling influence on spin dynamics in N6+ ions under intense laser fields.
Main Methods:
- Numerical solution of the time-dependent Dirac equation.
- Application of the Foldy-Wouthuysen transformation.
- Simulation of interactions with linearly polarized intense laser pulses.
Main Results:
- Increased laser wavelength reduces spin state lifetime and enhances spin vector sensitivity.
- Spin fluctuation asymmetry observed due to carrier-envelope phase and system asymmetry.
- Spin-orbit coupling induces different spin forces based on initial spin polarization relative to laser propagation.
- Spin-orbit coupling affects spin quantization and leads to asymmetric spin fluctuation.
Conclusions:
- Laser pulse characteristics significantly control spin dynamics in molecular ions.
- Spin-orbit coupling plays a critical role in spin fluctuation of highly charged ions under intense laser fields.
- Tailoring laser parameters and considering spin-orbit coupling are essential for manipulating spin states.
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