As carrier-envelope phase contributes to high-order harmonic phase: effects on the electric field of attosecond pulses

In this work we report on a self-referencing technique for the measurement of the effect of the carrier-envelope phase (CEP) of the driving pulses on the phase difference between consecutive harmonics. By using a numerical model based on the nonadiabatic saddle-point method we demonstrate that, in particular experimental conditions, it is possible to directly control the electric field of the attosecond pulses by controlling the electric field of the driving pulses. In conclusion, using a self-referencing technique, we have experimentally demonstrated that the harmonic phase is directly affected by the CEP of the driving pulses