Frustrated tunneling dynamics in ultrashort laser pulses

We study a model for frustrated tunneling ionization using ultrashort laser pulses. The is based on the strong field approximation and it employs saddle point to predict quasiclassical trajectories that are captured Rydberg states. present classification of saddle-point solutions explore their behavior as functions angular momentum final state, well carrier--envelope phase (CEP) pulse. compare state population computed by results obtained numerical propagation time-dependent Schr\"odinger equation (TDSE) hydrogen atom. While we find qualitative agreement in CEP dependence populations principal quantum numbers, $n$, individual channels, $\ell$, found be inconsistent between TDSE. Thus, our show improvements order quantitative ionizaiton.