5 µm CW Ce3+-doped chalcogenide glass fiber laser with 17% slope efficiency.

V V Koltashev,M P Frolov,S O Leonov,S E Sverchkov,B I Galagan,Yu V Korostelin,Ya K Skasyrsky,G E Snopatin,M V Sukhanov,A P Velmuzhov,V I Kozlovsky,B I Denker,V G Plotnichenko

Optics letters（2024）

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摘要

Efficient room temperature mid-infrared laser action in a Ce3+-doped chalcogenide fiber was demonstrated. The fiber had a doped selenide glass core in an undoped sulfide glass cladding. The pump source was a CW Fe2+:ZnSe laser emitting at 4.14 µm. The optimized fiber length allowed obtaining up to 7 mW of 5.06 µm output with 17% slope efficiency at room temperature.

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