By using Gaussian—Hermite-mode expansion, the Raman nonlinear wave equations for the second-order Stokes field generated in the processes of cascade Raman scattering and four-wave mixing are solved for the case of a pump with a focused Gaussian beam. The numerical analysis is made under tight and soft focusing cases, and the calculated results are compared with our recent experiment.
© 1988 Optical Society of America
Xusan Cheng and Takayoshi Kobayashi, "Raman wave front of higher-order Stokes and four-wave mixing processes," J. Opt. Soc. Am. B 5, 2363-2367 (1988)