Ionization Ultrashort pulses Atom lasers Atoms Dinger equation Hydrogen atoms Interference patterns Laser pulses Momentum Momentum distributions Quantum mechanical model Quantum theory Ab initio calculations Angular distribution Argon lasers Atomic ionizations Atomic physics Calculations Classical trajectory monte carlo Coherent superpositions Coulomb potential Coulomb-Volkov Electric fields Electronic wave packets Exact numerical solutions Few-cycle laser pulse Field approximation H2O H2O molecules Holograms