Large spectral bandwidth stimulated Rayleighhyphen;wing scattering in CS2

摘要

Large spectral bandwidth stimulated Rayleighhyphen;wing scattering (SRWS) induced by picosecond laser pulse has been investigated in bulk liquid CS2. The spectral broadening range of SRWS can reach up to 200 cmminus;1on Stokes side. Many features of this scattering, such as the shift of the spectral maximum from excitation line and the temperature dependence, are presented. In order to explain the spectral broadening phenomenon, a possible mechanism based on collisionhyphen;induced light scattering is also discussed.