46.9 W 980 nm diffraction-limited monolithic fiber laser based on 20/80 Yb-doped fiber

Yao Tian; Zhiquan Lin; Huawei Jiang; Xin Cheng; Yan Feng

doi:10.1117/12.3007650

24 November 2023 46.9 W 980 nm diffraction-limited monolithic fiber laser based on 20/80 Yb-doped fiber

Yao Tian, Zhiquan Lin, Huawei Jiang, Xin Cheng, Yan Feng

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129352J (2023) https://doi.org/10.1117/12.3007650
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

A cost-effective 46.9 W diffraction-limited all-fiber laser at 980 nm was demonstrated with a 20/80-μm octagonal double-cladding Yb-doped fiber under direct pumping of low-cost 915 nm laser diode. The slope efficiency is about 24% and the center wavelength is 977 nm. The beam quality M² factor is measured to be 1.30 (Mx² = 1.40, My² = 1.19). The amplified spontaneous emission at 1030 nm is about 50 dB lower spectrally at the maximum output power. To understand the laser generation process and optimize the output performance, we investigated the effect of gain fiber length on the output power characteristics both experimentally and theoretically. The experimental results are consistent with the simulation.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yao Tian, Zhiquan Lin, Huawei Jiang, Xin Cheng, and Yan Feng "46.9 W 980 nm diffraction-limited monolithic fiber laser based on 20/80 Yb-doped fiber", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129352J (24 November 2023); https://doi.org/10.1117/12.3007650

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