Abstract

Recent studies carried out in Stimulated Rayleigh-wing Scattering (SRWS) showed that beams scattered by CS₂ in a single picosecond beam excitation present a large bandwidth spectrum,¹ explained by the stimulation of collisional scattering.² In the picosecond range, when a probe beam is added to the medium with pump beam, only one deviated backward Rayleigh scattered beam is observed, which is very different from the results obtained in nanosecond excitation where two backward Brillouin scattered beams are observed.³ We mainly investigate here the influence of the large bandwidth spectrum of SRWS on the deviation of the scattered direction in ps excitation. We describe also the role of the different parameters and provide an interpretation.

© 1994 IEEE