Chinese Journal of Lasers, Volume. 48, Issue 4, 0401004(2021)
High-Power Ytterbium-Doped Fiber Laser Oscillator: Current Situation and Future Developments
Figures & Tables(21)
![Experimental setup of the 17.5 kW laser oscillator with spatial configuration[6]](/Images/icon/loading.gif){kind=icon}
Fig. 1. Experimental setup of the 17.5 kW laser oscillator with spatial configuration[6]
Fig. 2. Output power and beam quality of 17.5 kW laser oscillator with spatial configuration[6]. (a) Pump power versus output power; (b) beam quality measurement results
Fig. 3. Experiment setup of the spatial configured laser oscillator based on gain fiber with fiber grating[25]
Fig. 4. Experimental results of the spatial configured laser oscillator based on gain fiber with fiber grating[25]. (a) Spectra in different power; (b) center wavelength in different power
Fig. 6. Experimental results of 6 kW all-fiber laser oscillator[24]. (a) Power and efficiency curve; (b) output spectrum; (c) output beam profile
Fig. 7. 5 kW all-fiber laser oscillator based on fs laser written fiber grating[26]. (a) Experimental setup; (b) spectrum of the fiber gratings
Fig. 8. Experimental results of 5 kW all-fiber laser oscillator based on fs laser written fiber grating[26]. (a) Power and beam profile; (b) output spectrum
Fig. 10. Experimental results of the 8 kW all-fiber laser oscillator[7]. (a) Spectrum in different power; (b) beam quality in 8 kW
Fig. 11. Relationship between output power and time domain normalized STD in fiber amplifier and fiber oscillator[9]
Fig. 12. Beam profile of ring laser employing fiber laser oscillator. (a) Beam profile of 3 kW ring laser from Shanghai FeiBo laser Technologies Co. Led.[61]; (b) beam profile of 5 kW ring laser from NUDT
Fig. 13. Experiment results of fiber laser in short wavelength. (a) Output power of different wavelengths; (b) spectrum of 1018 nm laser
Fig. 14. Experiment results of fiber laser before and after optimizing of pump wavelength. (a) Output power and efficiency at 976 nm wavelength; (b) output power and efficiency at optimized pump wavelength
Fig. 15. Spindly gain fiber. (a) With variable core-to-cladding diameter ratio; (b) with invariable core-to-cladding diameter ratio
Fig. 16. Experimental results of laser oscillator employing spindly gain fiber laser with constant core-to-cladding diameter ratio. (a) Output power and efficiency; (b) beam quality in different power
Fig. 17. Output laser beam patterns of laser oscillator based on high-order mode reflected fiber grating. (a) LP11o mode;(b) LP21e mode
Table 1. Typical research results of high power all-fiber laser oscillators
View tableTable 1. Typical research results of high power all-fiber laser oscillators
Year Institution Type φ or Aeff NA Power /kW Beam quality Reference 2012 Alfalight, USA All fiber φ=20 μm 0.065 1.0 M2≈1.2 Ref. [10] 2014 Coherent, USA Spatial Aeff=800 μm2 0.048 3.0 M2<1.15 Ref. [11] 2014 NUDT, China All fiber φ=20 μm 0.065 1.5 M2<1.2 Ref. [12] 2015 TJU, China All fiber φ=20 μm 0.065 1.6 M2<1.1 Ref. [13] 2015 Fujikura, Japan All fiber Aeff=400 μm2 0.07 2.0 M2=1.2 Ref. [14] 2016 NUDT, China All fiber φ=20 μm 0.065 2.5 M2≈1.2 Ref. [15] 2018 TJU, China All fiber φ=20 μm 0.065 2.0 M2≈1.5 Ref. [16] 2017 NUDT, China All fiber φ=20 μm 0.065 3 M2≈1.3 Ref. [17-18] 2017 SUS Tech, China All fiber φ=20 μm 0.065 2 M2<1.2 Ref. [19] 2017 Fujikura, Japan All fiber Aeff=400 μm2 0.07 3 M2≈1.3 Ref. [20] 2017 NUDT, China All fiber φ=25 μm — 4 M2≈2.2 Ref. [21] 2018 NUDT, China All fiber φ=25 μm (GT Wave) — 3.96 M2≈2.0 Ref. [22] 2018 Fujikura, Japan All fiber Aeff=600 μm2 — 5 M2≈1.3 Ref. [4] 2018 NUDT, China All fiber φ=25 μm 0.065 5.2 M2≈1.7 Ref. [3,23] 2019 Universität Jena, Germany All fiber φ=20 μm 0.06 4.8 M2≈1.3 Ref. [8] 2019 NUDT, China All fiber Aeff=600 μm2 — 6.06 M2≈2.6 Ref. [24] 2019 Laserline GmbH, Germany Spatial φ=50--90 μm 0.11 17.5 BPP: 8 mm·mrad Ref. [6] 2020 Fraunhofer Institute for LT, Germany Spatial φ<100 μm — 8.113 — Ref. [25] 2020 Universität Jena, Germany All fiber φ=20 μm 0.07 5 M2≈1.3 Ref. [26] 2020 Fujikura, Japan All fiber Aeff=600 μm2 — 8 BPP: 0.5 mm·mrad Ref. [7]
Table 2. Typical products of high power all-fiber laser oscillator in some company
View tableTable 2. Typical products of high power all-fiber laser oscillator in some company
Year Company Pump scheme φ /μm Power /kW Beam quality Reference 2010 CoreLase, Finland 976 nm LD pump 20 1 M2<1.6 Ref. [29] 2015 Maxphotonics, China — — 1.5 M2<1.3 Ref. [28] 2015 CoreLase, Finland 976 nm LD pump 20 2 M2<1.6 Ref. [29] 2018 GW laser, China 976 nm LD pump 20 3 M2<1.3 Ref. [36-37] 2018 DK laser, China — — 3 M2<1.3 Ref. [33] 2018 FeiBo laser, China LD pump — 3 Ring laser Ref. [32] 2019 Lumentum, USA 915 nm LD pump — 4.2 BPP: 1.5 mm·mrad Ref. [30] 2019 GW laser LD pump — 4 Single mode Ref. [36] 2019 Reci laser, China LD pump — 4 Single mode Ref. [35] 2019 FeiBo laser, China LD pump — 4 Ring laser Ref. [31]
Table 3. Research and industry status of high power all-fiber laser amplifiers
View tableTable 3. Research and industry status of high power all-fiber laser amplifiers
Year Institution Pump scheme Fiber type Power Beam quality Reference 2009 IPG photonics, USA Tandem pump DCF 10 M2≈1.3 Ref. [28] 2015 NUDT, China LD pump 30/400 μm DCF 4.1 M2≈2.1 Ref. [41] 2016 Universität Jena, Germany LD pump 23/460 μm DCF 4.3 M2≈1.27 Ref. [42] 2016 Xi'an IOPM, China LD pump 30/600 μm DCF 4.62 M2≈1.67 Ref. [43] 2016 Huazhong UST, China LD pump 25/400 μm DCF 3.5 M2≈1.28 Ref. [44] 2016 NUDT, China Tandem pump DCF 10 β≈1.886 Ref. [45] 2016 Tsinghua Unv., China LD pump DCF 10 — Ref. [46] 2016 CEAP, China LD pump GT Wave 5 M2≈2.2 Ref. [47] 2017 TJU, China LD pump 30/600 μm DCF 5.01 M2<1.8 Ref. [48] 2017 CEAP, China LD pump 30 μm DCF 6.03 M2<2.38 Ref. [49] 2018 CEAP, China LD pump 30/520 μm PIFL 10.45 — Ref. [38] 2018 CEAP, China LD pump 30/900 μm DCF 10.6 β<2 Ref. [39] 2019 SIOM, China LD pump 30/600 μm DCF 10 — Ref. [40] 2019 Raycuslaser, China LD pump — 3 — Ref. [34,50] 2019 Scyglight, China LD pump — 3 Single mode Ref. [51] 2019 JPT laser, China LD pump — 4 Single mode Ref. [34] 2019 Maxphotonics, China LD pump — 5 BPP: 1.8~3.0 mm·mard Ref. [52] 2019 Raypower Laser, China — — 5 Single mode Ref. [53] 2019 DK laser, China — — 5 M2≈1.8 Ref. [33,54] 2020 DK laser, China — — 6 M2<2 Ref. [55]
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Xiaolin Wang, Hanwei Zhang, Baolai Yang, Xiaoming Xi, Peng Wang, Chen Shi, Zefeng Wang, Pu Zhou, Xiaojun Xu, Jinbao Chen. High-Power Ytterbium-Doped Fiber Laser Oscillator: Current Situation and Future Developments[J]. Chinese Journal of Lasers, 2021, 48(4): 0401004
Paper Information
Special Issue: SPECIAL ISSUE FOR "NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY"
Received: Jun. 28, 2020
Accepted: Jul. 20, 2020
Published Online: Feb. 3, 2021
The Author Email: Wang Xiaolin (zhoupu203@163.com), Zhou Pu (zhoupu203@163.com), Xu Xiaojun (xuxj@163.com)
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