Chinese Journal of Lasers, Volume. 52, Issue 17, 1701002(2025)
High Brightness Fiber Coupled Blue Laser Diode with kW Level Power Output
Figures & Tables(17)
Table 1. High brightness blue fiber coupled lasers from NUBURU and Laserline
View tableTable 1. High brightness blue fiber coupled lasers from NUBURU and Laserline
Product Max output power /W Fiber core diameter /μm Beam parameter product （BPP） /（mm·mrad） Nuburu AO-200 200 200 <15 Nuburu AO-650 650 400 30 Nuburu AI-1500 1500 100 <11 LDMblue500-60 500 600 60 LDMblue1000-60 1000 600 40 LDMblue1500-60 1500 1000 60 LDMblue2000-60 2000 1000 60
Table 2. Technique parameters of different blue LD modules
View tableTable 2. Technique parameters of different blue LD modules
Institute Fiber parameter Power /
W
Spatial brightness /
（MW‧cm-2‧sr-1）
Comment Core diameter /μm NA NUBURU 100 0.22 1500 125.6 Wavelength combining，containing near-infrared waveband Laserline 300 0.22 4000 37.22 Osaka University 400 0.22 1500 7.85 Naoki Hayamizu 100 0.22 185 15.49 Usually operating at 150 W BWT 330 0.22 1000 7.69 Beijing University of Technology 105 144.7 ~10.99 Huazhong University of Science and Technology 200 0.22 230 4.81 Changchun Institute of Optics， Fine Mechanics and Physics， CAS 200 0.22 500 10.47 Xinghan Laser 105 0.22 200 15.19 Raycus 200 0.22 500 10.47 Institute of Applied Electronics， CAEP 105 0.22 75 5.7 Institute of Applied Electronics， CAEP 220 0.2 850 17.79 Single polarization （2021）
Table 3. Parameters of single chip and beam collimator
View tableTable 3. Parameters of single chip and beam collimator
Parameter Value Strip width of chip /μm 45 Divergence of slow axis /（°） 9 Divergence of fast axis /（°） 46 M2 of slow axis 14.885 M2 of fast axis 1.297 Focal length of fast-axis collimator （FAC） /mm 0.3 Focal length of slow-axis collimator （SAC） /mm 9 BPP of slow axis /（mm·mrad） 2.132 BPP of fast axis /（mm·mrad） 0.186
Table 4. Reliability analysis
View tableTable 4. Reliability analysis
Component Quantity Lifetime /h Failure rate /h⁻¹ Operating time /h Unit reliability Reliability MTBF /h Total 1000 0.773883964 0.407951674 1115.316 COS 40 4000 0.00025 1000 0.778800783 0.4615 1293.204 FAC 40 1000000 0.000001 1000 0.9990005 0.960789439 25000 SAC 40 1000000 0.000001 1000 0.9990005 0.960789439 25000 Small mirror 40 1000000 0.000001 1000 0.9990005 0.960789439 25000 Fiber module 1 300000 3.33×10-6 1000 0.996672216 0.996672216 300000
Table 5. Power distribution of sub-beams
View tableTable 5. Power distribution of sub-beams
No. Power after beam combining /W Comment 1 125 40 single chips@2.4 A， numerical aperture of 0.19 2 123 40 single chips@2.4 A， numerical aperture of 0.19 3 117 40 single chips@2.4 A， numerical aperture of 0.19 4 123 40 single chips@2.4 A， numerical aperture of 0.19 5 117 40 single chips@2.4 A， numerical aperture of 0.19 6 123 40 single chips@2.4 A， numerical aperture of 0.19 7 123 40 single chips@2.8 A， numerical aperture of 0.19
Table 6. Parameters after beam collimation and focusing
View tableTable 6. Parameters after beam collimation and focusing
Parameter Value Divergence after fast axis collimation /mrad 4 Beam width after fast axis collimation /mm 3（0.38×8） Divergence after slow axis collimation /mrad 5 Beam width after slow axis collimation /mm 1.6 Beam size after focusing /μm 54.42 Numerical aperture after focusing 0.196
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Lanping Zhang, Hualing Wu, Quanwei Jiang, Linhui Guo, Chengqian Wang, Songxin Gao, Guobin Fan. High Brightness Fiber Coupled Blue Laser Diode with kW Level Power Output[J]. Chinese Journal of Lasers, 2025, 52(17): 1701002
Paper Information
Category: laser devices and laser physics
Received: Mar. 20, 2025
Accepted: Apr. 22, 2025
Published Online: Sep. 17, 2025
The Author Email: Guobin Fan (fanguobin@caep.cn)
CSTR:32183.14.CJL250620
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