Attosecond control of spin polarization in electron-ion recollision driven by intense tailored fields

@article{Ayuso2017AttosecondCO,
  title={Attosecond control of spin polarization in electron-ion recollision driven by intense tailored fields},
  author={David Ayuso and {\'A}lvaro Jim{\'e}nez-Gal{\'a}n and Felipe Morales and Misha Ivanov and Olga Smirnova},
  journal={2017 Conference on Lasers and Electro-Optics Europe \& European Quantum Electronics Conference (CLEO/Europe-EQEC)},
  year={2017},
  pages={1-1}
}
  • D. Ayuso, Á. Jiménez-Galán, O. Smirnova
  • Published 3 December 2016
  • Physics
  • 2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Ionization of noble gases by strong infrared circularly-polarized laser pulses can produce electron currents with a controllable degree of spin polarization [1-4]. Spin polarization arises as a consequence of (1) entanglement between the liberated electron and the parent ion, and (2) sensitivity of ionization to the sense of electron rotation in the initial state. In this context, the use of two-color counter-rotating bicircular fields [5] opens new opportunities for introducing the spin degree… 
Selectivity in electron emission induced by ultrashort circularly polarized laser pulses
We theoretically investigate the ionization of neonlike atoms by an intense ultrashort circularly polarized laser pulse as a function of wavelength, spanning the regime from single-photon ionization
Controlling polarization of attosecond pulses with plasmonic-enhanced bichromatic counter-rotating circularly polarized fields
The use of bichromatic counter-rotating laser field is known to generate high-order harmonics with nonzero ellipticity. By combining such laser field with a plasmonic-enhanced spatially inhomogeneous
Spin and Angular Momentum in Strong-Field Ionization.
TLDR
The spin polarization of electrons from multiphoton ionization of Xe by 395 nm circularly polarized laser pulses at 6×10^{13}  W/cm^{2} has been measured and shows that the ionization probability is strongly dependent on the sign of the magnetic quantum number.
Generation of isolated circularly polarized attosecond pulses by three-color laser field mixing
We propose and theoretically demonstrate a method to generate the circularly polarized supercontinuum with three-color electric fields. The three-color field is synthesized from an orthogonally
Control of attosecond light polarization in two-color bicircular fields
We develop theoretically and confirm both numerically and experimentally a comprehensive analytical model which describes the propensity rules in the emission of circularly polarized high harmonics
Generation of isolated circularly polarized attosecond pulses by three-color laser field mixing.
TLDR
It is demonstrated that the three-color field imposes curved trajectories for ionized electrons and extends the time interval between each harmonic emitting and a nearly circular isolated attosecond pulse can be generated.
Evidence of ac-Stark-shifted resonances in intense two-color circularly polarized laser fields
We report on the appearance of a structure at low energies in the photoelectron momentum distribution of the hydrogen atom exposed to two-color counterrotating bicircular laser fields. These
Atomic and Molecular Processes in a Strong Bicircular Laser Field
With the development of intense femtosecond laser sources it has become possible to study atomic and molecular processes on their own subfemtosecond time scale. Table-top setups are available that
High Harmonics and Isolated Attosecond Pulses from MgO
On the basis of real-time ab initio calculations, we study the non-perturbative interaction of two-color laser pulses with MgO crystal in the strong field regime to generate isolated attosecond pulse
Polarized electron-beam acceleration driven by vortex laser pulses
We propose a new approach based on an all-optical set-up for generating relativistic polarized electron beams via vortex Laguerre-Gaussian (LG) laser-driven wakefield acceleration. Using a
...
...

References

SHOWING 1-10 OF 85 REFERENCES
Possibility of introducing spin into attoscience with spin-polarized electrons produced by a bichromatic circularly polarized laser field
We show that the electrons, produced in strong-bicircular-field-induced above-threshold ionization of inert-gas atoms, have a large spin asymmetry if the ions exhibit fine-structure splitting. For a
Circularly polarized harmonic generation by intense bicircular laser pulses: electron recollision dynamics and frequency dependent helicity
Numerical solutions of time-dependent Schrodinger equations for one and two electron cyclic molecules exposed to intense bichromatic circularly polarized laser pulses of frequencies and , such that
Generation of elliptically polarized attosecond pulse trains.
TLDR
It is shown that for the p ground state of the inert gases used in the experiments, the polarization of the attosecond pulses is close to elliptical, and this is caused by the different intensities of the high harmonics of the opposite helicity.
Opportunities for detecting ring currents using an attoclock setup
Strong field ionization by circularly polarized laser fields from initial states with internal orbital momentum has interesting propensity rule: electrons counter-rotating with respect to the laser
Spin conservation in high-order-harmonic generation using bicircular fields
We present an alternative theoretical model for a recent experiment [A.Fleischer et al., Nature Photon. 8, 543 (2014)] which used bichromatic, counter-rotating high intensity laser pulses to probe
Nonadiabatic tunnel ionization of current-carrying orbitals of prealigned linear molecules in strong circularly polarized laser fields
We derive the analytical formula of the ratio of the ionization rates of degenerate valence π± orbitals of prealigned linear molecules in strong circularly polarized (CP) laser fields. Interestingly,
Generating Isolated Elliptically Polarized Attosecond Pulses Using Bichromatic Counterrotating Circularly Polarized Laser Fields.
TLDR
It is theoretically demonstrate the possibility to generate both trains and isolated attosecond pulses with high ellipticity in a practical experimental setup and numerically show that highly elliptic attose Cond pulses are generated already at the single-atom level.
Electron spin-polarization in single-, two- and three-photon ionization of xenon
We present theoretical results on the spin-polarization of photoelectrons ejected in the process of single-, two-, and three-photon ionization of xenon by circularly polarized radiation. In all
Spin-polarized electrons produced by strong-field ionization
We show that ionization of noble gas atoms by strong infrared circularly polarized laser field under standard exerimental conditions can yield electrons with up to 100% spin polarization in energy
Time-Resolved Holography with Photoelectrons
TLDR
Experiments in which metastable xenon atoms were ionized with intense 7-micrometer laser pulses from a free-electron laser recorded holographic structures that record underlying electron dynamics on a sublaser-cycle time scale, enabling photoelectron spectroscopy with a time resolution higher than the duration of the ionizing pulse.
...
...