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- Title
Symmetry Violation in Bichromatic Ionization by a Free-Electron Laser: Photoelectron Angular Distribution and Spin Polarization.
- Authors
Popova, Maria M.; Gryzlova, Elena V.; Kiselev, Maksim D.; Grum-Grzhimailo, Alexei N.
- Abstract
A fundamental phenomenon of coherent control is investigated theoretically using the example of neon photoionization by the bichromatic field of a free-electron laser. A system exposed to coherent fields with commensurable frequencies loses some symmetry, which manifests itself in the angular distribution and spin polarization of the electron emission. We predict several such effects, for example, the violation of symmetry with respect to the plane perpendicular to the polarization vector of the second harmonic and the appearance of new components of spin polarization. Furthermore, we predict a very efficient control of spin polarization via manipulation of the phase between the harmonics. Experimental observation of these effects is accessible with modern free-electron lasers operating in the extreme ultraviolet wavelength regime.
- Subjects
SPIN polarization; ANGULAR distribution (Nuclear physics); FREE electron lasers; PHOTOELECTRONS; ELECTRON spin; ELECTRON emission; LINEAR polarization
- Publication
Symmetry (20738994), 2021, Vol 13, Issue 6, p1015
- ISSN
2073-8994
- Publication type
Article
- DOI
10.3390/sym13061015