| Popis: |
The light self-diffraction in the case of the high modulated phase gratings induced in semiconductor materials is studied by solving numerically the set of the coupled wave equations, which were used previously for gratings produced by linear phenomena. We have extended this formalism to include the case of the absorbing materials and the nonuniformity of the interfering laser beams, which induce the gratings. Finally, we compare this description with our experimental data obtained in the self-diffraction on the phase gratings induced in crystalline silicon wafers by Nd:YAG laser beams. The experimental results are fitting better our theoretical description. |
