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Stimulated Raman scattering of long XeCl laser pulses in multimode silica fibers

For the first time stimulated Raman scattering (SRS) in multimode silica fibers pumped with long XeCl laser pulses has been observed. The spectral and temporal development of SRS both experimentally and theoretically have been studied. Two orders of SRS have been obtained in the 311 divided by 317 nm spectral region. The experimental result are in good agreement with computer simulations of SRS in which effects of self- and cross-phase modulation and group velocity dispersion are negligible. In the numerical model are included experimentally measured spectra of the Raman gain curve and the pump laser spectra.