The 1.5th-generation “three-high/one-excellent” YDF specialty laser fiber

Yu Juan; Ni Li; Peng Kun; Xiang Heng; Leng Xiaoxiao; Lin Aoxiang

doi:10.11884/HPLPB202436.240268

Volume 36 Issue 10

Oct. 2024

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Yu Juan, Ni Li, Peng Kun, et al. The 1.5th-generation “three-high/one-excellent” YDF specialty laser fiber[J]. High Power Laser and Particle Beams, 2024, 36: 101001. doi: 10.11884/HPLPB202436.240268

Citation:

Yu Juan, Ni Li, Peng Kun, et al. The 1.5th-generation “three-high/one-excellent” YDF specialty laser fiber[J]. High Power Laser and Particle Beams, 2024, 36: 101001. doi: 10.11884/HPLPB202436.240268

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The 1.5th-generation “three-high/one-excellent” YDF specialty laser fiber

doi: 10.11884/HPLPB202436.240268

Institute of Chemical Materials, CAEP, Mianyang 621900, China

Received Date: 2024-08-15
Accepted Date: 2024-09-18
Rev Recd Date: 2024-09-18

Available Online: 2024-09-21

Publish Date: 2024-10-15

Abstract

Abstract

For the development of high-end fiber lasers and breaking through the technical bottlenecks limiting the output power and performance improvement of fiber laser systems, the Joint-Innovation Center of High Power Fiber Laser Technology, Institute of Chemical Materials (ICM) of China Academy of Engineering Physics (CAEP) , adopted the mode-tailoring fabrication process technology, theoretically designed and firstly fabricated the 1.5th-generation (1.5G) YDF specialty laser fibers, which are particularly suitable for 976 nm-LD end-pumping method (976-technology route) to effectively improve the threshold of mode instability (TMI) and significantly optimize the beam quality of laser output. Compared with currently widely-used 1.0G Yb-APS fiber, 1.5G YDF specialty laser fiber shows about 20% improvement both in laser output power and beam quality. The 1.5G YDF specialty laser fibers fully demonstrate technical characteristics of “three-high/one-excellent”—high power, high efficiency, high TMI threshold, and M² optimization—which can be selected by high-end customers in the industrial market and/or applied in high power laser fields.
- fiber laser,
- threshold of mode instability,
- beam quality,
- single mode,
- fiber design and fabrication,
- laser fiber

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References(15)

References

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