We have developed a statistical nonlinear model to explain an anomalous intensity saturation observed in the amplification of intense broadband incoherent pulses on neodynium-doped glass power chains. The physics behind this model is basically self-phase modulation creating new wavelengths scattered in the tail of the gain profile. The theory shows qualitative agreement with the experimental results.
© 1997 Optical Society of America
J. Garnier, J. P. Fouque, L. Videau, C. Gouédard, and A. Migus, "Amplification of broadband incoherent light in homogeneously broadened media in the presence of Kerr nonlinearity," J. Opt. Soc. Am. B 14, 2563-2569 (1997)