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5 µm CW Ce3+-doped chalcogenide glass fiber laser with 17% slope efficiency
Optics Letters- received 02/13/2024; accepted 04/15/2024; posted 04/17/2024; Doc. ID 521495
- Abstract: 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 to obtain up to 7 mW of 5.06 µm output with 17% slope efficiency at room temperature.