Study on laser performance of tapered ytterbium doped fiber in nanosecond pulse amplifier

Weizhi Liu; Xiaoliang Wang; Xianfeng Lin; Zhilun Zhang; Tao Luo; Runheng Xiao; Yingbin Xing; Jinggang Peng; Haiqing Li; Nengli Dai; Jinyan Li

doi:10.1117/12.3014318

18 March 2024 Study on laser performance of tapered ytterbium doped fiber in nanosecond pulse amplifier

Weizhi Liu, Xiaoliang Wang, Xianfeng Lin, Zhilun Zhang, Tao Luo, Runheng Xiao, Yingbin Xing, Jinggang Peng, Haiqing Li, Nengli Dai, Jinyan Li

Author Affiliations +

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 1310403 (2024) https://doi.org/10.1117/12.3014318
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

In this paper, the ytterbium-doped tapered fiber with core/inner cladding diameter varying from 31/250 μm to 62/500 μm was designed and prepared by the improved chemical vapor deposition and solution doping technology. An all-fiber nanosecond pulse amplifier was built based on the ytterbium-doped tapered fiber, and the influence of the longitudinal structure on the output characteristics of nanosecond pulsed laser was investigated. A nanosecond pulsed laser output with a central wavelength of 1064 nm, an average power of 832 W, a single pulse energy of 8.32 mJ and a peak power of 24.8 kW at a repetition rape of 100 kHz was achieved based on the ytterbium-doped tapered fiber with a large diameter uniform region length ratio of 62.5%. Compared with 50/400 μm uniform fiber, the ytterbium-doped tapered fiber showed obvious suppression effect on stimulated Raman scattering and beam degradation at a similar output power.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Weizhi Liu, Xiaoliang Wang, Xianfeng Lin, Zhilun Zhang, Tao Luo, Runheng Xiao, Yingbin Xing, Jinggang Peng, Haiqing Li, Nengli Dai, and Jinyan Li "Study on laser performance of tapered ytterbium doped fiber in nanosecond pulse amplifier", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 1310403 (18 March 2024); https://doi.org/10.1117/12.3014318

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