https://doi.org/10.1140/epjd/e2004-00034-2
Coherent phase control in ionization of magnesium by a bichromatic laser field of frequencies ω and 2ω
1
Institute of Electronic Structure and Laser, FORTH, P.O. Box 1527,
Heraklion-Crete 71110, Greece
2
Dept. of Telecommunications Science, Univ. of Peloponnese, 221 00 Tripolis, Greece
Corresponding author: a gzloh@iesl.forth.gr
Received:
24
June
2003
Revised:
5
November
2003
Published online:
9
March
2004
We have investigated the coherent phase control
on the autoionizing state (AIS)
resonantly coupled with the ground state for Mg through a two- and
a four-photon transition simultaneously, using a bichromatic linearly
polarized laser field. The frequency is chosen such that the lasers
are tunable around resonance with the transition
,
which implies
eV and
eV. We are interested in the modification of autoionizing (AI) line
shape through the relative phase and laser intensities. A strong phase
dependence on the total ionization yield and ionization rate is found.
We also performed a time-dependent calculation which takes into consideration
all the resonant states of the process.
PACS: 32.80.Qk – Coherent control of atomic interactions with photons / 32.80.Rm – Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) / 32.80.Dz – Autoionization
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004