Strong-field ionization of atoms and molecules: The two-term saddle point method

Abstract

We derive an analytical formula for the ionization rate of neutral atoms and molecules in a strong monochromatic field. Our model is based on the strong-field approximation with transition amplitudes calculated by an extended saddle point method. We show that the present two-term saddle point method reproduces even complicated structures in angular resolved photo electron spectra.

References in corpus (6)

• Multiphoton detachment of electrons from negative ions
• High-order above-threshold ionization: the uniform approximation and the effect of the binding potential
• Strong-field ionization of diatomic molecules and companion atoms: strong-field approximation and tunneling theory including nuclear motion
• Influence of molecular symmetry on strong-field ionization: Studies on ethylene, benzene, fluorobenzene, and chlorofluorobenzene
• High-harmonic generation from arbitrarily oriented diatomic molecules including nuclear motion and field-free alignment
• Coulomb-Volkov approach of ionization by extreme ultraviolet laser pulses in the subfemtosecond regime

Cited by in corpus (7)

• Theory of Subcycle Linear Momentum Transfer in Strong-Field Tunneling Ionization
• Attosecond Ionization Time Delays in Strong-Field Physics
• Effects of orientation and alignment in high-harmonic generation and above threshold ionization
• Causality and quantum interference in time-delayed laser-induced nonsequential double ionization
• Exact Keldysh theory of strong-field ionization: residue method vs saddle-point approximation
• Subcycle resolved strong-field tunneling ionization: Identification of magnetic dipole and electric quadrupole effects
• Shapes of leading tunnelling trajectories for single-electron molecular ionization