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Proceedings Paper

Coherent control of atomic photoionization
Author(s): S. Cavalieri; R. Eramo; Luca Fini; M. Materazzi
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Paper Abstract

Coherent control provides a quantum interference based method for controlling atomic and molecular dynamics. We report two experimental observations of different ways to achieve such a control in atomic photoionization continuum. One is the photoionization of sodium atoms, initially prepared in the 3P1/2 excited state, by a non resonant three-photon interaction with 1064-nm laser light and by a one-photon interaction with the third-harmonic field, at 355 nm. Interference between the two transition paths allows the control of the total ionization rate by varying the relative phase of the laser fields. The second experiment is the observation of the modification of the ionization continua of xenon through laser induced continuum structure (LICS). The multiphoton radiative decay of the xenon ground state into the two electronic continua, that correspond to the two fine structure levels of the ground state of the xenon ion, is varied by electromagnetically embedding a bound state of the atom into the two continua. Both experiments are performed on an atomic beam apparatus which uses a time-of-flight spectrometer for energy analyzing the emitted photoelectrons.

Paper Details

Date Published: 21 October 1998
PDF: 7 pages
Proc. SPIE 3485, 11th International Vavilov Conference on Nonlinear Optics, (21 October 1998); doi: 10.1117/12.328244
Show Author Affiliations
S. Cavalieri, INFM and Univ. di Firenze (Italy)
R. Eramo, INFM and Univ. di Firenze (Italy)
Luca Fini, INFM and Univ. di Firenze (Italy)
M. Materazzi, INFM and Univ. di Firenze (Italy)

Published in SPIE Proceedings Vol. 3485:
11th International Vavilov Conference on Nonlinear Optics
Sergei G. Rautian, Editor(s)

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