Multiple-short-pulse stimulated Brillouin scattering

Publisher Website
Google Scholar
Abstract
Stimulated Brillouin scattering characteristics are formulated for the case of a multiple-short-pulse pump. Simplified stimulated Brillouin scattering equations in the small- and large-gain limits are solved for the Stokes intensity giving the dependence on the pulse width and delay, and pulse number. Coherent and incoherent intensities were also calculated and a quadratic versus linear dependence, respectively, on the pulse number was found. It is shown that the gain is largely unaffected by the appearance of a pulsed pump; however, the intensity is roughly reduced by the ratio τp/Δ, where τp is the pulse width and Δ is the sum of the pulse width and separation.