WAVELET TEMPORAL PROFILE OF HIGH-ORDER HARMONICS EMITTED BY A 2-LEVELATOM IN THE PRESENCE OF A LASER-PULSE

The acceleration of the electron in a two-level atom driven by a shea laser pulse of intermediate strength is calculated and therefore analy sed through two wavelet transforms in order to obtain the temporal evo lution of the spectrum of the emitted radiation. We show (i) the full spectrum at different instants and (ii) the time profile of some repre sentative harmonics. The growth of the harmonics as well as the appear ance and erratic behaviour of the hyper-Raman can be followed with the laser intensity.