Frequency dependence of nonsequential double ionization of atoms in strong laser fields

TL;DR

This paper investigates how the frequency of strong laser fields affects nonsequential double ionization in atoms, using quantum mechanical models to provide detailed insights and complement existing experimental and semi-classical findings.

Contribution

It offers a quantum mechanical analysis of frequency dependence in double ionization, including effects of field cycles, filling gaps in prior semi-classical and experimental studies.

Findings

Ionization yields vary with laser frequency

Momentum distributions are characterized across frequencies

Results align with experimental data

Abstract

The frequency dependence of (nonsequential) double ionization is studied in fully quantum mechanical calculations using a (1+1)-dimensional model atom. Other time-dependent effects such as the influence of the number of field cycles are also investigated. We present ionization yields and momentum distributions. The results are consistent with experimental and semi-classical data available in the literature, thus complementing them with a quantum mechanical description.