Classical-quantum correspondence for above-threshold ionization.

Above-Threshold Ionization by an Elliptically Polarized Field: Quantum Tunneling Interferences and Classical Dodging

Measurements of above-threshold ionization electron spectra in an elliptically polarized field as a function of the ellipticity are presented. In the rescattering regime, electron yields quickly drop with increasing ellipticity. The yields of lower-energy electrons rise again when circular polarization is approached. A classical explanation for these effects is provided. Additional local maxima...

Above-threshold ionization photoelectron spectrum from quantum trajectory

Many nonlinear quantum phenomena of intense laser-atom physics can be intuitively explained with the concept of trajectory. In this paper, Bohmian mechanics (BM) is introduced to study a multiphoton process of atoms interacting with the intense laser field: above-threshold ionization (ATI). Quantum trajectory of an atomic electron in intense laser field is obtained from the BohmNewton equation ...

The effects of classical resonance islands in time-dependent quantum mechanics

We investigate the effect of the main classical resonance island on the quantal ionization probabilities for an excited one-dimensional hydrogen atom perturbed by a near resonant, periodic electric field. The classical and quantal ionization probabilities produced by a periodic electric field near the (1:1)-resonance show similarities and also remarkable differences; specifically both probabili...

Quantum theory of longitudinal momentum transfer in above-threshold ionization

Triple photoionization of Lithium near threshold

Solving the full classical four-body Coulomb problem numerically using a Wigner initial distribution we formulate a classical-quantum hybrid approach to study triple ionization by single photon absorption from the Li ground state in the threshold region. We confirm the Wannier threshold law σ ∝ Eα and we show that the α determined in the interval between 2−5 eV deviates from the analytical thre...