Photoelectron Polarization Vortexes in Strong-Field Ionization
- URL: http://arxiv.org/abs/2402.11825v1
- Date: Mon, 19 Feb 2024 04:34:40 GMT
- Title: Photoelectron Polarization Vortexes in Strong-Field Ionization
- Authors: Pei-Lun He, Zhao-Han Zhang, Karen Z. Hatsagortsyan, and Christoph H.
Keitel
- Abstract summary: We show that momentum-resolved spin polarization is significant, typically exhibiting a vortex structure relative to the laser polarization axis.
The polarization arises from the transfer of spin-orbital coupling in the bound state to the spin-correlated quantum orbits in the continuum.
Spin-polarized electron holography is demonstrated, feasible for extracting fine structural information about the atom.
- Score: 0.46873264197900916
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: The spin polarization of photoelectrons induced by an intense linearly
polarized laser field is investigated using numerical solutions of the
time-dependent Schr\"odinger equation in companion with our analytic treatment
via the spin-resolved strong-field approximation and classical trajectory Monte
Carlo simulations. We demonstrate that, even though the total polarization
vanishes upon averaging over the photoelectron momentum, momentum-resolved spin
polarization is significant, typically exhibiting a vortex structure relative
to the laser polarization axis. The polarization arises from the transfer of
spin-orbital coupling in the bound state to the spin-correlated quantum orbits
in the continuum. The rescattering of photoelectrons at the atomic core plays
an important role in forming the polarization vortex structure, while there is
no significant effect of the spin-orbit coupling during the continuum dynamics.
Furthermore, spin-polarized electron holography is demonstrated, feasible for
extracting fine structural information about the atom.
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