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题名:
1.5 kW Incoherent Beam Combining of Four Fiber Lasers Using Adaptive Fiber-Optics Collimators
作者: Geng, Chao1; Zhao, Baoyin2; Zhang, Entao2; Luo, Wen1; Tan, Yi1; Zhu, Yonggang2; Yang, Hening2; Mu, Jinbo1; Li, Xinyang1; Duan, Kailiang2; Zhao, Wei2
刊名: IEEE PHOTONICS TECHNOLOGY LETTERS
出版日期: 2013-07-01
卷号: 25, 期号:13, 页码:1286-1289
关键词: High-power fiber laser ; beam combining ; tip/tilt control ; adaptive fiber-optics collimator ; thermal-blooming
文章类型: Article
英文摘要: We demonstrate the incoherent beam combining (BC) of four high-power single-mode fiber lasers. Adaptive fiber-optics collimators (AFOC) of 0.5 kW-level are developed to correct the tip/tilt-type phase errors among beamlets. The maximum deflection angle of the AFOC is about 0.29 mrad. A stochastic parallel gradient descent algorithm is employed as the tip/tilt control strategy. The tip/tilt control makes four separate laser beams overlap with each other in the far-field, and the average of normalized power-in-bucket increases from 0.171 in open loop to 0.798 in closed loop when 1.5-kW total output power is achieved. The precise tracking ability and control accuracy of this BC system are investigated. Experimental results expose that thermal-blooming effect disturbs BC seriously when the total output power is up to kW-level, which could be mitigated by inducing air flow near the laser output.
WOS标题词: Science & Technology ; Technology ; Physical Sciences
类目[WOS]: Engineering, Electrical & Electronic ; Optics ; Physics, Applied
研究领域[WOS]: Engineering ; Optics ; Physics
关键词[WOS]: HIGH-POWER ; AMPLIFIER ARRAY ; COMBINATION
收录类别: SCI
语种: 英语
WOS记录号: WOS:000322372900016
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1206
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China

Recommended Citation:
Geng, Chao,Zhao, Baoyin,Zhang, Entao,et al. 1.5 kW Incoherent Beam Combining of Four Fiber Lasers Using Adaptive Fiber-Optics Collimators[J]. IEEE PHOTONICS TECHNOLOGY LETTERS,2013,25(13):1286-1289.
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