ANTI-STOKES GENERATION AND SOLITON DECAY IN STIMULATED RAMAN-SCATTERING

Using numerical methods we find that anti-Stokes generation in stimulated Raman scattering can cause Raman solitons to decay, unless the fields are phase matched. Photon number conservation then leads to unusually high intensities in regions where both the Stokes and anti-Stokes fields vanish. For large propagation lengths, the pump soliton can decay considerably, and as a result, the fields do not interact strongly. We therefore predict the formation of solitonlike pulses at the anti-Stokes frequency.