Fabrication of All-fiber 2×2 Coherent Beam Combiner for High Power CBC Applications

Liu, Yu; Li, Yue; Li, Yuwei; Huang, Zhiao; Yan, Yuefang; Xing, Feng; Li, Min; Wu, Wenjie; Huang, Shan; Tao, Renchun; Lin, Hungyen; Wang, Jianjun; Feng, Jing

doi:10.1364/assl.2021.jtu1a.19

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“…[29], our group proposed an all-fiber CBC method based on the self-imaging effect, which has the potential to obtain a single laser beam with nearly 100% efficiency. Then, a 2 × 2 all-fiber coherent beam combiner was experimentally demonstrated, but the efficiency was only about 52.7% [ 30 , 31 ] . The discrepancy between the theoretical prediction and the experimental result is mainly attributed to the deviation from the optimal combiner design, which is a key factor for improving the CBC performance, but there is a lack of thorough investigations so far.…”

Section: Introductionmentioning

confidence: 99%

Mismatch analysis of all-fiber coherent beam combiners based on the self-imaging effect

Yan,

Liu,

Zhang

et al. 2023

High Pow Laser Sci Eng

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All-fiber coherent beam combiners based on the self-imaging effect can achieve a near-perfect single laser beam, which can provide a promising way to overcome the power limitation of a single-fiber laser. One of the key points is combining efficiency, which is determined by various mismatches during fabrication. A theoretical model has been built, and the mismatch error is analyzed numerically for the first time. The mismatch errors have been numerically studied with the beam quality and combining efficiency being chosen as the evaluation criteria. The tolerance of each mismatch error for causing 1% loss is calculated to guide the design of the beam combiners. The simulation results are consistent with the experimental results, which show that the mismatch error of the square-core fiber is the main cause of the efficiency loss. The results can provide useful guidance for the fabrication of all-fiber coherent beam combiners.

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Section: Introductionmentioning

confidence: 99%

Mismatch analysis of all-fiber coherent beam combiners based on the self-imaging effect

Yan,

Liu,

Zhang

et al. 2023

High Pow Laser Sci Eng

Self Cite

View full text Add to dashboard Cite

show abstract

Fabrication of All-fiber 2×2 Coherent Beam Combiner for High Power CBC Applications

Abstract: An all-fiber structure 2×2 coherent beam combiner based on large-mode-area fiber and square-core fiber has been fabricated. Four lasers coherently combined using such combiner showed 52.7% of efficiency in the central lobe.

Cited by 1 publication

References 8 publications

Mismatch analysis of all-fiber coherent beam combiners based on the self-imaging effect

Mismatch analysis of all-fiber coherent beam combiners based on the self-imaging effect

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