We present investigations on the seed source dependence of stimulated Raman scattering (SRS) created in a high power fiber amplifier. It is shown that fiber oscillators are much worse in terms of SRS than other seed sources. The longitudinal mode composition was found to be of less importance. We reinforce the experimental observations by a numerical investigation, which shows that temporal power variations on the ps-scale and their propagation along the fiber are crucial for the SRS creation in high-power fiber systems, extending the well-known but simplified SRS threshold description.
Victor Bock, Andreas Liem, Thomas Schreiber, Ramona Eberhardt, and Andreas Tünnermann, "Explanation of stimulated Raman scattering in high power fiber systems," Proc. SPIE 10512, Fiber Lasers XV: Technology and Systems, 105121F (Presented at SPIE LASE: February 01, 2018; Published: 26 February 2018); https://doi.org/10.1117/12.2287770.
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