Propagation effects on attosecond pulse generation

摘要

This paper is devoted to the dynamics of attosecond pulses created during the high order harmonic generation process. In this goal we study Ti:sapphir laser pulses propagating in a H2+ gas. The dynamics and propagation of the incident pulse is obtained by solving the macroscopic Maxwell equations. The molecular gas reaction on the electric field, the polarization, is derived from TDSE's following the model presented in [9], [10]. We are especially interested in this work, in the attosecond pulse dynamics and the intensity of the first harmonics dependently of the propagation length inside the gas, on the attosecond pulse generation and propagation and the energy of return graphs in function of the driver phase.