Atomic ionization Ionization 14 Atoms 8 Laser pulses 8 Short laser pulse 8 Electron emission 6 Above-threshold ionization 4 Approximation theory 4 Atom lasers 4 Differential equations 4 Distorted waves 4 Hydrogen 4 Initial state 4 Integrodifferential equations 4 Ionization amplitude 4 Numerical solution 4 Photoelectron spectroscopy 4 Ab initio calculations 2 Aluminum 2 Analytical models 2 Angular distributions 2 Angular momentum distribution 2 Calculations 2 Carrier-envelope phase 2 Charged particles 2 Classical trajectory monte carlo 2 Classical-quantum correspondence 2 Coulomb-Volkov wave function 2 Differential energy 2 Dinger equation 2