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Low NA Ge-Clad Step-Index Yb-Doped Fiber for High Power Picosecond Laser Pulses

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Abstract

We report short absorption length LMA Yb-doped fiber with a low NA (0.04) and the amplification of 190ps pulses to 101µJ pulse energy with 150W average power and >70% slope efficiency using only 0.8 m of the fiber.

© 2020 The Author(s)

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