Abstract

High-power, high-efficiency ytterbium-doped solid-core photonic-bandgap fiber amplification at the long-wavelength edge of the Yb gain band is reported. Amplified-spontaneous-emission-free, 30W non-polarized and 25W linearly-polarized 1178nm outputs have been achieved with <58% slope efficiencies.

© 2009 The Optical Society

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