Open AccessPhase sensitive coherent control excitation schemes applied to photoionization microscopy of the hydrogen atom
Author(s) -
P. Kalaïtzis,
S. Danakas,
Katerina Ferentinou,
F. Lépine,
C. Bordas,
S. Cohen
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 - 10.1088/1742-6596/1412/10/102011
Subject(s) - photoionization , atomic physics , excitation , ionization , coherent control , degenerate energy levels , hydrogen atom , physics , photoionization mode , electron , atom (system on chip) , hydrogen , field desorption , laser , optics , ion , quantum mechanics , computer science , embedded system , group (periodic table)
Synopsis Photoionization microscopy (PM) is employed for imaging the flux of slow (meV) electrons ejected via atomic photoionization in the presence of a static electric field. Just above the ionization limit continuum and quasi-disrete states are degenerate. In hydrogen atom resonant excitation dominates over the continuum one, while the reverse holds for more complex atoms. We demonstrate theoretically that by using a bichromatic ω /2 ω laser field and by applying phase sensitive coherent control techniques it is possible to unbury and isolate other-wise obscured resonant features in PM images.