Adiabatic Floquet Picture for Hydrogen Atom in an Intense Laser Field

TL;DR

This paper introduces an adiabatic Floquet framework in the length gauge to analyze hydrogen atom dynamics under intense laser fields, providing an intuitive understanding of the effects of laser frequency and intensity.

Contribution

It develops a novel adiabatic Floquet approach in the length gauge, offering physical insights into laser-atom interactions and calculating key quantities for hydrogen.

Findings

Adiabatic potential curves for hydrogen in laser fields

Analysis of effects of laser polarization on atom dynamics

Physical quantities derived from the adiabatic picture

Abstract

We develop an adiabatic Floquet picture in the length gauge to describe the dynamics of a hydrogen atom in an intense laser field. In this picture, we discuss the roles played by frequency and intensity in terms of adiabatic potentials and the couplings between them, which gives a physical and intuitive picture for quantum systems exposed to a laser field. For simplicity, analyze hydrogen and give the adiabatic potential curves as well as some physical quantities that can be readily calculated for the ground state. Both linearly and circularly polarized laser fields are discussed.