Phase sensitive coherent control excitation schemes applied to photoionization microscopy of the hydrogen atom

P. Kalaïtzis (1) , S. Danakas (1) , K Ferentinou (1) , F. Lépine (2) , C. Bordas (2) , S. Cohen (1)

1 Department of Physics [Ioannina)
2 iLM - DYNAMO - iLM - Structure et dynamique multi-échelle des édifices moléculaires

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/2ω 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.

Domaines: Sciences de l'ingénieur [physics]; Chimie; Physique [physics]; Agrégats Moléculaires et Atomiques [physics.atm-clus]

P. Kalaïtzis, S. Danakas, K Ferentinou, F. Lépine, C. Bordas, et al.. Phase sensitive coherent control excitation schemes applied to photoionization microscopy of the hydrogen atom. Journal of Physics: Conference Series, 2020, 1412, pp.102011. ⟨10.1088/1742-6596/1412/10/102011⟩. ⟨hal-02885971⟩