Single mode 1018nm fiber laser with power of 230W

Glick, Yaakov; Sintov, Yoav; Zuitlin, Roey; Pearl, Shaul; Feldman, Revital; Horvitz, Zvi; Shafir, N.

doi:10.1117/12.2212389

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“…After intensive theoretical and experimental investigations, the important rules to build high power 1018 nm YDFLs are well known, which include employing YDF with a high core/inner cladding area ratio, shortening the YDF length, suppressing Fresnel reflection and so on. To date, the output power of 1018 nm YDFLs has reached over 200 W in a single-mode operation [14,15] and over 800 W in a multimode output beam [16]. Further power scaling is very probable if more powerful pump sources are provided.…”

Section: Introductionmentioning

confidence: 99%

2240 W high-brightness 1018 nm fiber laser for tandem pump application

Leng

et al. 2017

Laser Phys. Lett.

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In this letter, we present a 2240 W high-brightness 1018 nm fiber laser by power combination. The system consists of seven 1018 nm ytterbium-doped fiber lasers and a homemade 7 × 1 all-fiber power combiner. The output core diameter of the power combiner is 50 µm and the numerical aperture is 0.2. The overall transmission efficiency is about 99%. This high-power, high-brightness fiber laser can be used as a pump source in tandem pumping configurations for several kilowatts of power scaling.

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Section: Introductionmentioning

confidence: 99%