19×1 signal combiner for 10kW-level high-power fiber laser

Jiarong Zheng; Li Li; Chunquan Hong; Huailiang Liu; Xiuquan Ma

doi:10.1117/12.2686937

27 November 2023 19×1 signal combiner for 10kW-level high-power fiber laser

Jiarong Zheng, Li Li, Chunquan Hong, Huailiang Liu, Xiuquan Ma

Proceedings Volume 12760, Advanced Lasers, High-Power Lasers, and Applications XIV; 1276013 (2023) https://doi.org/10.1117/12.2686937
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Conference Poster

Abstract

Incoherent laser beam combining based on signal combiners is an effective method to significantly increase the laser power. Although many high power signal combiners have been reported, most of these combiners have seven or less input ports. In this paper, a 19×1 signal combiner is fabricated based on tapered fiber bundle technique including optical fibers bundling with capillary, fiber bundle tapering, cutting, and fusion splicing to the output fiber. The input fibers of the combiner are 14/250 μm-core/cladding optical fibers, and the output fiber is a 100 μm-diameter-core multimode fiber. The signal combiner is tested with eight 1500 W fiber laser modules, and 11.55 kW output power is obtained. The beam parameter product is 3.83 under 2 kW laser output. The temperature rise of the signal combiner is measured under passive heat dissipation condition at different laser power outputs, and the thermal slope is calculated to be 1.56 °C/kW. This 19×1 combiner has the potential to be used in a 30kW-level or even higher power fiber laser system.

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

Citation Download Citation

Jiarong Zheng, Li Li, Chunquan Hong, Huailiang Liu, and Xiuquan Ma "19×1 signal combiner for 10kW-level high-power fiber laser", Proc. SPIE 12760, Advanced Lasers, High-Power Lasers, and Applications XIV, 1276013 (27 November 2023); https://doi.org/10.1117/12.2686937

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