Theoretical and Experimental Investigation of a 10-kW High-Efficiency 1070-nm Fiber Amplifier

被引：0

作者：

Chen X. ^{[1
,3
]}

He Y. ^{[1
]}

Xu Z. ^{[1
]}

Guo X. ^{[1
]}

Ye R. ^{[1
]}

Liu K. ^{[1
]}

Yang Y. ^{[1
]}

Shen H. ^{[1
]}

Zhang H. ^{[1
]}

Yu C. ^{[2
]}

He B. ^{[1
]}

Hu L. ^{[2
]}

Zhou J. ^{[1
]}

机构：

[1] Shanghai Key Laboratory of All Solid-State Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai

[2] Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai

[3] Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing

来源：

He, Bing (bryanho@siom.ac.cn) | 1600年 / Science Press卷 / 47期

关键词：

Dual-end pumping; Fiber amplifiers; Fiber optics; High efficiency; Master oscillator power amplification; Ytterbium-doped fiber;

D O I：

10.3788/CJL202047.1006001

中图分类号：

学科分类号：

摘要：

Based on the theoretical model of ytterbium (Yb3+)-doped fiber amplifier, the effect of the bend radius of Yb3+ fiber on the mode transmission loss and dependence of optical-optical efficiency on the fiber length were analyzed. By employing the characteristics of the Yb3+ fiber used in the experiment, the bend radius and fiber length were optimized. A master oscillation power amplification configuration was used. This configuration had a seed laser source with 170 W power, beam quality Mx2=1.10, My2=1.05, and a power amplifier with homemade 30/600 μm Yb3+ fiber as the gain fiber. Dual-end pumping was adopted. We obtained a laser beam with an output power of 10.14 kW, a central wavelength of 1070.36 nm, and a 3 dB bandwidth of 5.32 nm. The beam quality of the output laser was Mx2=3.12, My2=3.18. In the amplification stage, the maximum optical-optical efficiency was 87.9%, and the slope efficiency reached up to 89.2%. The signal-to-noise ratio of the output laser was more than 45 dB. © 2020, Chinese Lasers Press. All right reserved.

引用

共 23 条

[1] Richardson D J, Nilsson J, Clarkson W A., High power fiber lasers: current status and future perspectives (Invited), Journal of the Optical Society of America B, 27, 11, pp. B63-B92, (2010)
[2] Zervas M N., High power ytterbium-doped fiber lasers: fundamentals and applications, International Journal of Modern Physics B, 28, 12, (2014)
[3] Zervas M N, Codemard C A., High power fiber lasers: a review, IEEE Journal of Selected Topics in Quantum Electronics, 20, 5, pp. 219-241, (2014)
[4] Zhou J, Wang P, Zhou P., The introduction of "High-power fiber laser technology" special issue, Chinese Journal of Lasers, 44, 2, (2017)
[5] Agrawal G P., Nonlinear fiber optics, (2001)
[6] Dawson J W, Messerly M J, Beach R J, Et al., Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power, Optics Express, 16, 17, pp. 13240-13266, (2008)
[7] Smith R G., Optical power handling capacity of low loss optical fibers as determined by stimulated Raman and Brillouin scattering, Applied Optics, 11, 11, pp. 2489-2494, (1972)
[8] Haarlammert N, Sattler B, Liem A, Et al., Optimizing mode instability in low-NA fibers by passive strategies, Optics Letters, 40, 10, pp. 2317-2320, (2015)
[9] Jauregui C, Eidam T, Otto H J, Et al., Physical origin of mode instabilities in high-power fiber laser systems, Optics Express, 20, 12, pp. 12912-12925, (2012)
[10] Tao R M, Ma P F, Wang X L, Et al., Polarization effects on thermal-induced mode instabilities in high power fiber lasers

← 1 2 3 →