Abstract

We show that the power of stimulated Rayleigh wing scattering (SRWS) generated in a bulk liquid of anisotropic molecules is reduced by the simultaneous presence of a stimulated four-photon interaction (SFPI) because the combined effect of SRWS and SFPI is walk-off between the generated signal and the pump beam, which shortens the nonlinear interaction length. SRWS may be greatly enhanced in a hollow waveguide filled with liquids of a higher index of refraction than the waveguide cladding, as the long interaction length is maintained in the waveguide. The enhanced SRWS results in a considerable red-shifted frequency, super-broadening an intense optical pulse upon passing through the waveguide.

© 1991 Optical Society of America