EFFECT OF A STRONG DRESSING FIELD ON THE POLARIZABILITY OF ATOMIC HELIUM AT HARMONIC FREQUENCIES

Authors
CORMIER E LAMBROPOULOS P
Citation
E. Cormier et P. Lambropoulos, EFFECT OF A STRONG DRESSING FIELD ON THE POLARIZABILITY OF ATOMIC HELIUM AT HARMONIC FREQUENCIES, Journal of physics. B, Atomic molecular and optical physics, 30(14), 1997, pp. 3095-3106
Citations number
26
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
30
Issue
14
Year of publication
1997
Pages
3095 - 3106
Database
ISI
SICI code
0953-4075(1997)30:14<3095:EOASDF>2.0.ZU;2-W
Abstract
We investigate the effect of a strong dressing field on the polarizabi lity of atomic helium at harmonic frequencies. This study is carried o ut in a time-dependent non-perturbative calculation by looking at the harmonic spectrum resulting from the interaction with the combination of two fields: a strong pump field at the fundamental frequency and a weak probe field at some odd harmonic frequency. We present results fo r harmonic frequencies extending over the characteristic spectrum of h igh-order harmonic generation.