Laser operation at 1.2 µm in Ho3+-doped ZBYA glass fibers.

Powerful 1.2-µm laser operation was produced in Ho3+-doped single-cladding, in-house fabricated ZrF4-BaF2-YF3-AlF3 (ZBYA) glass fibers. The fibers were fabricated based on ZBYA glass with a composition of ZrF4-BaF2-YF3-AlF3. Pumped by an 1150-nm Raman fiber laser, the maximum combined laser output power emitted from both sides of a 0.5-mol% Ho3+-doped ZBYA fiber was 6.7 W, with a slope efficiency of 40.5%. We also observed lasing at 2.9 µm with an output power of 350 mW, which was ascribed to the transition of Ho3+:5I6 → 5I7. The effect of rare earth (RE) doping concentration and the length of the gain fiber were also investigated to determine their effect on laser performance at 1.2 µm and 2.9 µm.

Citation

Changjun Xu, Xiaoxu Li, Yanfei Shen, Jiquan Zhang, Shijie Jia, Gerald Farrell, Shunbin Wang, Pengfei Wang. Laser operation at 1.2 µm in Ho3+-doped ZBYA glass fibers. Optics letters. 2023 Jun 15;48(12):3263-3266

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PMID: 37319077

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