TY - JOUR
KW - non-Palaiseau
KW - paper
AU - Richard Taïeb
AU - Valérie Véniard
AU - Alfred Maquet
AB - We present a theoretical study of the main characteristics of two-color photoionization spectra obtained when atoms are subjected to an intense radiation pulse containing the fundamental of an infrared laser and one of its higher harmonics. The frequency of the latter is chosen to be high enough that the atom can be ionized by a single photon. The calculation is performed by numerical integration of the time-dependent Schrodinger equation for a (three-dimensional) hydrogen atom. We present the general properties of the spectra and angular distributions as well as the possible occurrence of interferences between the laser-assisted process and above-threshold ionization. Our results indicate that such interference effects, which can lead to partial coherent control of the photoionization process, can be observed at moderate laser intensities within the reach of currently operated laser and harmonic sources. (C) 1996 Optical Society of America
BT - JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
DA - FEB
M1 - 2
N2 - We present a theoretical study of the main characteristics of two-color photoionization spectra obtained when atoms are subjected to an intense radiation pulse containing the fundamental of an infrared laser and one of its higher harmonics. The frequency of the latter is chosen to be high enough that the atom can be ionized by a single photon. The calculation is performed by numerical integration of the time-dependent Schrodinger equation for a (three-dimensional) hydrogen atom. We present the general properties of the spectra and angular distributions as well as the possible occurrence of interferences between the laser-assisted process and above-threshold ionization. Our results indicate that such interference effects, which can lead to partial coherent control of the photoionization process, can be observed at moderate laser intensities within the reach of currently operated laser and harmonic sources. (C) 1996 Optical Society of America
PY - 1996
SP - 363
EP - 370
T2 - JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
TI - Two-color coherent control of atomic multiphoton ionization with high-order harmonics: Time-dependent Schrodinger equation treatment
VL - 13
SN - 0740-3224
ER -