TY - JOUR
T1 - Roles of resonances and recollisions in strong-field atomic phenomena. II. High-order harmonic generation
AU - Taïeb, Richard
AU - Véniard, Valérie
AU - Wassaf, Joseph
AU - Maquet, Alfred
PY - 2003/1/1
Y1 - 2003/1/1
N2 - The question of the enhancements found in simulations and in an experiment for high-order harmonic generation “HHG” emission spectra at intensities for which there was a multiphoton resonance with an excited state was addressed. Several simulations, based on the resolution of the TDSE for different model potentials, indicated that in addition to the harmonics at frequencies close to the resonant one, there was a notable enhancement of a large number of other harmonics located in the plateau. The results confirmed that multiphoton resonances could enhance harmonic emission rates at intensities ≈1014W cm-2 for a Ti:sapphire laser, i.e., at the border between the multiphoton and the tunnelling regime.
AB - The question of the enhancements found in simulations and in an experiment for high-order harmonic generation “HHG” emission spectra at intensities for which there was a multiphoton resonance with an excited state was addressed. Several simulations, based on the resolution of the TDSE for different model potentials, indicated that in addition to the harmonics at frequencies close to the resonant one, there was a notable enhancement of a large number of other harmonics located in the plateau. The results confirmed that multiphoton resonances could enhance harmonic emission rates at intensities ≈1014W cm-2 for a Ti:sapphire laser, i.e., at the border between the multiphoton and the tunnelling regime.
U2 - 10.1103/PhysRevA.68.033403
DO - 10.1103/PhysRevA.68.033403
M3 - Article
AN - SCOPUS:85009311452
SN - 1050-2947
VL - 68
SP - 1
EP - 8
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 3
M1 - 033403
ER -