Control of SBS pulse compression by interaction geometrical parameters

Abstract

In this paper, the effect of the interaction geometry parameters on the stimulated Brillouin scattering process in a generator cell to achieve maximum compression is studied experimentally. For this purpose, variations of the input energy flux to the cell and the interaction length on the backward stokes pulse width and energy reflectivity were studied by changing the cell length and the distance of the lens to the cell. Our results show that the distance of the lens to the cell window can be considered as a determinative parameter to explore the position of the generated stokes pulse in the generator cell for obtaining the Maximum interaction length. Therefore, by adjusting the distance of the lens and input energy to the cell, the pulse compression ratio is controlled and maximum pulse compression can be obtained.