Exact Nondipole Kramers-Henneberger Form of the Light-Atom Hamiltonian: An Application to Atomic Stabilization and Photoelectron Energy Spectra

Abstract

The exact nondipole minimal-coupling Hamiltonian for an atom interacting with an explicitly time- and space-dependent laser field is transformed into the rest frame of a classical free electron in the laser field, i.e., into the Kramers-Henneberger frame. The new form of the Hamiltonian is used to study nondipole effects in the high-intensity, high-frequency regime. Fully three dimensional nondipole {\it ab initio} wavepacket calculations show that the ionization probability may decrease for increasing field strength. We identify a unique signature for the onset of this dynamical stabilization effect in the photoelectron spectrum.

4 pages, 3 figures

References in corpus (2)

• Small rare gas clusters in soft X-ray pulses
• Xenon Clusters in Intense VUV Laser Fields

Cited by in corpus (16)

• Atoms and Molecules in Intense Laser Fields: Gauge Invariance of Theory and Models
• Strong Orientation Effects in Ionization of H${}_2^{+}$ by Short, Intense, High-Frequency Light Sources
• Nondipole effects in atomic dynamic interference
• Electron dynamics driven by light pulse derivatives
• The envelope Hamiltonian for electron interaction with ultrashort pulses
• Photon-momentum transfer in diatomic molecules: an ab initio study
• Multiphoton ionization and stabilization of helium in superintense xuv fields
• Scattering of accelerated wave packets
• Spatio-temporal interference of photo electron wave packets and time scale of non-adiabatic transition in high-frequency regime
• Transient spectroscopy from time-dependent electronic-structure theory without multipole expansions
• Ionization Induced by the Ponderomotive Force in Intense and High-Frequency Laser Fields
• Quantum Dot Behaviour under the Influence of Non-Resonant Structured Laser Beams
• Bogolyubov's averaging theorem applied to the Kramers-Henneberger Hamiltonian
• Ionization suppression of excited atomic states beyond the stabilization regime
• Theoretical derivation of laser-dressed atomic states by using a fractal space
• Floquet approach for dynamics in short and intense laser pulses