Abstract
We describe a monolithic (fully fused), 1.2-kW, Yb-doped fiber laser with single-mode beam quality. This laser employs a new generation of 100-W, high-brightness, fiber-coupled pump sources based on spatially multiplexed single emitters and a simple, end-pumped design for high efficiency, reliability, and environmental stability.
© 2012 Optical Society of America
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