Strong field approximation for systems with Coulomb interaction

DOI10.1080/09500340802161881zbMATH Open1157.78346arXiv0803.1972OpenAlexW2069857400WikidataQ59039993 ScholiaQ59039993MaRDI QIDQ3615188

Author name not available (Why is that?)

Publication date: 17 March 2009

Published in: Journal of Modern Optics (Search for Journal in Brave)

Abstract: A theory describing above-threshold ionization of atoms and ions in a strong electromagnetic field is presented. It is based on the widely known strong field approximation and incorporates the Coulomb interaction between the photoelectron and the nucleus using the method of complex classical trajectories. A central result of the theory is the Coulomb-corrected ionization amplitude whose evaluation requires little extra numerical effort. By comparing our predictions with the results of ab initio numerical solutions for two examples we show that the new theory provides a significant improvement of the Coulomb-free strong field approximation. For the case of above-threshold ionization in elliptically polarized fields a comparison with available experimental data is also presented.

Full work available at URL: https://arxiv.org/abs/0803.1972

zbMATH Keywords

ionizationcomplex trajectoriesCoulomb effectsstrong laser field

Mathematics Subject Classification ID

Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics (81Q05) Atomic physics (81V45) Lasers, masers, optical bistability, nonlinear optics (78A60) Molecular physics (81V55)

Cites Work

• Qprop: A Schrödinger-solver for intense laser-atom interaction
• Quantum orbits: a space-time picture of intense-laser-induced processes in atoms
• Quantum-orbit theory of high-order atomic processes in intense laser fields
• On the validity of the strong field approximation and simple man's theory

Related Items (7)

Difference approximation of the Coulomb collision operator ⋮ Application of the saddle-point method to strong-laser-field ionization ⋮ Nondipole Effects in Atomic Ionization Induced by an Intense Counter‐Rotating Bicircular Laser Field ⋮ Real-time quantum trajectories for classically allowed dynamics in strong laser fields ⋮ Title not available (Why is that?) ⋮ OFF-SHELL EFFECTS IN FEW-BODY SYSTEMS WITH COULOMB FORCE ⋮ Strong field ionization by ultrashort laser pulses: Application of the Keldysh theory

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