High-robustness good-beam-quality 3×1 signal combiner device for 10-kW all-fiber laser combining applications

Yue Li; Donglin Yan; Pengfei Zhao; Yu Liu; Yuwei Li; Rumao Tao; Honghuan Lin; Jianjun Wang

doi:10.1117/12.2624754

27 March 2022 High-robustness good-beam-quality 3×1 signal combiner device for 10-kW all-fiber laser combining applications

Yue Li, Donglin Yan, Pengfei Zhao, Yu Liu, Yuwei Li, Rumao Tao, Honghuan Lin, Jianjun Wang

Author Affiliations +

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 121696G (2022) https://doi.org/10.1117/12.2624754
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

In this paper, we report a high-robustness good-beam-quality 3×1 signal combiner that performs very well under high power. We use three 3.5kW fiber lasers to inject into the three ports of the combiner to achieve a high power output of 10.4kW, and the power transmission efficiency is 98.2%.The output beam quality M² _4σ and β factor are tested when the power reached the highest, which are (5.465,5.2) and 2.69 respectively. The temperature rising rate of housing is 0.9 °C/kW, is effectively controlled by water cooling package of the combiner. This 3×1 signal combiner has been used in 10-kW fiber laser product and it works well in harsh environment, demonstrating high robustness against unconventional conditions.

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Yue Li, Donglin Yan, Pengfei Zhao, Yu Liu, Yuwei Li, Rumao Tao, Honghuan Lin, and Jianjun Wang "High-robustness good-beam-quality 3×1 signal combiner device for 10-kW all-fiber laser combining applications", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 121696G (27 March 2022); https://doi.org/10.1117/12.2624754

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KEYWORDS

Fiber lasers

Capillaries

Structured optical fibers

Laser applications

Laser welding

Signal attenuation

Laser cutting

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