Multiphoton excitation and ionization of two-electron atoms under strong laser pulses, with
emphasis on double excitation, is reviewed. After an introduction to the basic concepts of …

Abstract Short wavelength Free-Electron Lasers (FELs) are among the newest light sources
available to scientists to probe a wide range of phenomena, with chemical, physical and …

We present experimental measurements of vacuum ultraviolet light emission processes in a
15-Torr rare-gas medium exposed to a strong 1064-nm laser field. Apart from a small …

The development of lasers capable of producing high-intensity pulses has opened a new
area in the study of light-matter interactions. The corresponding laser fields are strong …

The authors present theoretical studies of high-order harmonic generation in a rare-gas
medium. The experimental results obtained at Saclay with a 1064 nm Nd-YAG laser in the …

Presents an overview of the current understanding of multiphoton ionization of atoms. It
begins with an introductory section to explain the background of the subject. Then the article …

High-order harmonic emission by one electron in a laser field bound to a zero-range
potential is extensively discussed. The model yields an expression for the emission rates in …

Quantum mechanically, photoionization can be fully described by the complex
photoionization amplitudes that describe the transition between the ground state and the …

When the radiation pulse of an intense laser propagates in gas, the atoms of the gas emit
odd harmonics of incident radiation. If λ is the incident wavelength, the outgoing radiation …

Production of higher harmonics in a model atom described by a three-dimensional δ-
function potential in the presence of a monochromatic linearly polarized field is investigated …