Open AccessCan we break the symmetry along the polarization axis in photoionization?
Author(s) -
Yu-Chen Cheng,
Sara Mikaelsson,
Saikat Nandi,
Lisa Rämisch,
Chen Guo,
Anne Harth,
Jan Vogelsang,
Miguel Miranda,
Cord L. Arnold,
Anne L’Huillier,
M. Gisselbrecht
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1412/7/072034
Subject(s) - photoionization , attosecond , physics , polarization (electrochemistry) , electron , atomic physics , laser , optics , symmetry (geometry) , spectral line , ultrashort pulse , ionization , quantum mechanics , chemistry , ion , geometry , mathematics
Synopsis Photoionization is a fundamental process in which an electron is emitted from an atom. The emission is traditionally considered to be symmetric with respect to the polarization axis, unless it is temporally confined to a period shorter than an optical cycle time. We demonstrate that this symmetry can still be broken by combining a train of a few attosecond pulses and a dressing laser field. The light fields act as temporal slits and phase modulator that releases electron wavepackets. The resulting photoelectron spectra differ for electrons emitted in opposite direction along the polarization.