Control of Photoionization Products by Quantum Interferences

Year: 1999

Authors: Cavalieri S., Eramo R., Fini L., Materazzi M., Charalambidis D., Faucher O.

Autors Affiliation: Istituto Nazionale di Fisica della Materia, Dipartimento di Fisica and European Laboratory for Non Linear Spectroscopy, Università di Firenze;
Foundation for Research and Technology–Hellas, Institute of Electronic Structure and Laser, Heraklion, Greece;
Physics Department, University of Crete, Heraklion, Greece;
Laboratoire de Physique, Universitè de Bourgogne, Facultè des Sciences Mirande, Dijon, FR-21004 France;

Abstract: Atomic and molecular photoproduction can be controlled by means of quantum interference. In the experiments reported in this work, such a general principle is exploited to control and modify two light–atom interaction parameters: the total ionization rate and the branching ratio between energy degenerate final states. In one experimental scheme the ionization is altered by inducing a resonance into the continuum; the other scheme is based on the control of the relative phase of two fields, both inducing competing ionization processes. The experiments have been performed on an atomic beam setup which uses a time-of-flight spectrometer for the analysis of the emitted electron energies.

Journal/Review: LASER PHYSICS

Volume: 9 (1)      Pages from: 249  to: 252

KeyWords: Induced continuum structure; Phase-control; Ionization; Sodium; Photodissociation

Connecting to view paper tab on IsiWeb: Click here