35 W highly effective Ytterbium-Erbium-Thulium tandem all-fiber 1.947 m laser system at 975 nm diode pumping

A. Kir'yanov, E. M. Sholokhov

LASER PHYSICS LETTERS(2023)

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Abstract
We report on progress towards effective mid-IR lasing using a tandem Ytterbium-Erbium/Thulium all-fiber laser system at near-IR diode pumping. similar to 35 W 1.947 mu m continuous-wave output power at similar to 120 W 975 nm pump power (29% overall efficiency) is reached.
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Key words
laser system,ytterbium-erbium-thulium,all-fiber
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