Fabrication and properties of domestic long tapered ytterbium-doped fiber with high tapering ratio

Yuwei Li; Cong Gao; Nian Liu; Shihao Sun; Honglei Hong; Jiangyun Dai; Changle Shen; Lei Jiang; Honghuan Lin; Jianjun Wang

doi:10.1117/12.2625207

27 March 2022 Fabrication and properties of domestic long tapered ytterbium-doped fiber with high tapering ratio

Yuwei Li, Cong Gao, Nian Liu, Shihao Sun, Honglei Hong, Jiangyun Dai, Changle Shen, Lei Jiang, Honghuan Lin, Jianjun Wang

Author Affiliations +

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 1216999 (2022) https://doi.org/10.1117/12.2625207
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

A ytterbium-doped large-mode-area step-index fiber perform was fabricated by chelate precursor doping technique. For the purpose of raising the threshold of nonlinear effects and transverse mode instability simultaneously, a long tapered fiber was drew by changing the perform drawing speed. The core/cladding diameter of this tapered fiber was varied from 10/155 to 26/400 μm in 18m-long with the tapering ratio of 2.6. Using this fiber as a gain medium for a fiber laser in amplifier, the beam quality factor M2 was ~1.2 when the output power obtained over 1.2kW with slope efficiency of 74.5%. The laser output spectrum was centered at 1063.8nm with narrow 3dB bandwidth of 0.26nm. The stimulated Raman scattering suppression ratio was about ~34.7dB.

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Yuwei Li, Cong Gao, Nian Liu, Shihao Sun, Honglei Hong, Jiangyun Dai, Changle Shen, Lei Jiang, Honghuan Lin, and Jianjun Wang "Fabrication and properties of domestic long tapered ytterbium-doped fiber with high tapering ratio", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 1216999 (27 March 2022); https://doi.org/10.1117/12.2625207

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