Polarization Control in Two-Color Above-Threshold Ionization of Atomic Helium

Anisotropy parameters in two-color two-photon above-threshold ionization

Equal energy sharing double photo ionization of the Helium atom at 20eV and 40eV above threshold

In this article we present triple differential cross sections for equal energy sharing kinematics for double photoionization of the helium atom at 20 and 40eV above threshold in the framework of the hyperspherical partial wave theory. This supplements our earlier work [1] in which we were successful in showing fully, gauge independence of the results in our formalism. Also in this work we treat...

Equal energy sharing photo double ionization of the Helium atom at 20 and 40eV above threshold

In this article we present TDCS for equal energy sharing kinematics for double photoionization of the helium atom at 20 and 40eV above threshold in the framework of the hyperspherical partial wave theory. This supplements our earlier work [1] in which we were successful in showing fully, gauge independence of the results in our formalism. Also in this work we treat cases in which the Stokes par...

High visibility in two-color above-threshold photoemission from tungsten nanotips in a coherent control scheme

In this article, we present coherent control of above-threshold photoemission from a tungsten nanotip achieving nearly perfect modulation. Depending on the pulse delay between fundamental ([Formula: see text]) and second harmonic ([Formula: see text]) pulses of a femtosecond fiber laser at the nanotip, electron emission is significantly enhanced or depressed during temporal overlap. Electron em...

Classical-quantum correspondence for above-threshold ionization.

We measure high resolution photoelectron angular distributions (PADs) for above-threshold ionization of xenon atoms in infrared laser fields. Based on the Ammosov-Delone-Krainov theory, we develop an intuitive quantum-trajectory Monte Carlo model encoded with Feynman's path-integral approach, in which the Coulomb effect on electron trajectories and interference patterns are fully considered. We...