Quantum-orbit theory of high-order atomic processes in intense laser fields

Milosevic, D. B.; Bauer, Dieter; Becker, W.

doi:10.1080/09500340500186099

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Quantum-orbit theory of high-order atomic processes in intense laser fields

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Bauer, Dieter
Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society;

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Milosevic, D. B., Bauer, D., & Becker, W. (2006). Quantum-orbit theory of high-order atomic processes in intense laser fields. Journal of Modern Optics, 53(1-2), 125-134. doi:10.1080/09500340500186099.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-869F-C

Abstract

The quantum-orbit formalism of high-order atomic processes in a strong laser field is presented starting from the strong-field approximation generalized to include higher-order effects. It is shown how to apply the quantum-orbit theory to various processes such as high-order above-threshold ionization and detachment, high-order harmonic generation, laser-assisted X-ray–atom scattering, laser-assisted electron–ion recombination, laser-assisted electron–atom scattering and non-sequential double ionization. Particular attention is devoted to high-order above-threshold ionization by few-cycle laser pulses. The results obtained using the strong-field approximation and the theory of quantum orbits are compared with the ab initio solution of the time-dependent Schrödinger equation. It is shown that Coulomb effects are important for low-energy electron spectra.