Eur. Phys. J. D 29, 201-208 (2004)
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

Abstract

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.