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12 September 2003 Stimulated Brillouin scattering in multimode fibers
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The propagation of high power narrowband laser pulses in multimode fibers and the limitations due to SBS are presented. An injection seeded pulsed Nd:YAG laser operating at 10 Hz was used to pump undoped step index fibers to determine the SBS threshold under various conditions. Measurements on 50μm core diameter fibers with various fiber lengths and pulse durations at 1064 nm were performed and simulated with a computer code. The code considers the time dependent coupling between the pump wave, the Stokes wave, and the acoustic wave. The experimental results are in good agreement with the numerical predictions. Our results quantify the limitations of high power narrowband pulse transmission in multimode fibers.
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Matthias Savage-Leuchs, Mark S. Bowers, and Andrew J. W. Brown "Stimulated Brillouin scattering in multimode fibers", Proc. SPIE 4972, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications II, (12 September 2003);

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