Effect Of Fluorescent Substances On Stimulated Raman Scattering

The fluorescence is demonstrated a well out-seeding effect in the stimulated Raman scattering(SRS), which can drastically low the SRS threshold and enhance the intensity of scattering-mode. The solution of fluorescent seeding in CS2 is used to study of the fluorescence enhancement SRS in liquid core optical fiber(LCOF). The results demonstrate that the stronger intensity of Stokes and anti-Stokes can be observed at low pump energy. The RhodamineB of narrow fluorescent spectrum is used, the high intensity of first-order anti-Stokes line and low intensity of first-order Stokes line are obtained because of the absorption and fluorescence effect of Rhodamine B; theβ-carotene of broad fluorescent seeding is used, the seventh-order Stokes lines are obtained at low pump energy because of the double-fluorescence and larger third-order nonlinear optical coefficient ofβ-carotene. So, we can selectively enhance the scattering-mode of SRS according to the different optical characteristics of fluorescent seeding.