Abstract

We present multimode fiber lasers for tandem pumping of high power Er-, Tm-, and Yb-doped lasers. These pump sources are based on especially developed multimode Er- and Yb-doped double-clad fibers. Er-doped lasers with record pump conversion efficiency >48% at 1565 nm and more than 41% at 1535 and 1590 nm were realized. Yb-doped fiber laser at 1020 nm with record high 85% pump conversion efficiency was demonstrated. Also, we propose novel design of compact and cost-effective multimode laser scheme. The potential of power scaling of proposed lasers to the 1–10-kW level and their advantages as resonant pump sources are discussed.

High-power fiber lasers based on tandem pumping

Pu Zhou, Hu Xiao, Jinyong Leng, Jiangmin Xu, Zilun Chen, Hanwei Zhang, and Zejin Liu
J. Opt. Soc. Am. B 34(3) A29-A36 (2017)

264  W output power at 1585  nm in Er–Yb codoped fiber laser using in-band pumping

M. A. Jebali, J.-N. Maran, and S. LaRochelle
Opt. Lett. 39(13) 3974-3977 (2014)

Brightness enhancement in random Raman fiber laser based on a graded-index fiber with high-power multimode pumping

Yizhu Chen, Chenchen Fan, Tianfu Yao, Hu Xiao, Jinyong Leng, Pu Zhou, Ilya N. Nemov, Alexey G. Kuznetsov, and Sergey A. Babin
Opt. Lett. 46(5) 1185-1188 (2021)

High power resonant pumping of Tm-doped fiber amplifiers in core- and cladding-pumped configurations

Daniel Creeden, Benjamin R. Johnson, Glen A. Rines, and Scott D. Setzler
Opt. Express 22(23) 29067-29080 (2014)

Highly scalable, resonantly cladding-pumped, Er-doped fiber laser with record efficiency

M. Dubinskii, J. Zhang, and V. Ter-Mikirtychev
Opt. Lett. 34(10) 1507-1509 (2009)