Suppression of stimulated Brillouin scattering in high-power single-frequency fiber amplifiers

Abstract

The effect of temperature variation along a high-power fiber amplifier on the stimulated Brillouin scattering (SBS) threshold is considered theoretically. We show that for an end-pumped rare-earth-doped double-clad fiber the inhomogeneous distribution of temperature, which is caused by the absorption of pump radiation, may result in total suppression of SBS even for output powers well above $200\mathrm{W}$.

© 2006 Optical Society of America

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