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First demonstration of kilowatt-level ytterbium-Raman fiber amplifiers with narrow-linewidth and near-diffraction-limited beam quality

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Abstract

Here, a kilowatt-level, narrow-linewidth fiber amplifier operating at 1120 nm is firstly designed and fulfilled by comprehensively suppressing stimulated Brillouin scattering, alleviating spectral broadening, and avoiding the power limitation of traditional wavelength division multiplexer.

© 2019 The Author(s)

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