Influence of stimulated Brillouin scattering on the radiation characteristics of stimulated Raman scattering components in multimode fiber-optical waveguides

Spectral, temporal, and spatial characteristics of the nonlinearly converted radiation were obtained for cases when stimulated Raman scattering (STRS) and stimulated Brillouin scattering (STBS) occurred jointly and separately in fused quartz multimode fiber-optic waveguides. A tenfold decrease in the pulse duration was achieved. Specific characteristics of the evolution of STRS and aspects associated with the formation and propagation of the Stokes components of STRS in fiber-optic waveguides under the conditions achieved are discussed. It is shown that STBS influences the characteristics of the STRS radiation when the material of the waveguide core is variously doped.