1.5 kW incoherent beam combining of four fiber lasers using adaptive fiber-optics collimators
文献类型：期刊论文
| 作者 | Geng, Chao1; Zhao, Baoyin2; Zhang, Entao2; Luo, Wen1; Tan, Yi1; Zhu, Yonggang2; Yang, Hening2; Mu, Jinbo1; Li, Xinyang1; Duan, Kailiang2 |
| 刊名 | IEEE Photonics Technology Letters
 |
| 出版日期 | 2013 |
| 卷号 | 25期号:13页码:1286-1289 |
| ISSN号 | 10411135 |
| 中文摘要 | 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. © 1989-2012 IEEE. |
| 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. © 1989-2012 IEEE. |
| 学科主题 | Fiber lasers - Fiber optics - Gradient methods - Single mode fibers |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000322372900016 |
| 源URL | [http://ir.ioe.ac.cn/handle/181551/6347]  |
| 专题 | 光电技术研究所_自适应光学技术研究室（八室） |
| 作者单位 | 1.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China 2.Xiàn Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xiàn 710119, China |
| 推荐引用方式 GB/T 7714 | 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. |
| APA | Geng, Chao.,Zhao, Baoyin.,Zhang, Entao.,Luo, Wen.,Tan, Yi.,...&Zhao, Wei.(2013).1.5 kW incoherent beam combining of four fiber lasers using adaptive fiber-optics collimators.IEEE Photonics Technology Letters,25(13),1286-1289. |
| MLA | Geng, Chao,et al."1.5 kW incoherent beam combining of four fiber lasers using adaptive fiber-optics collimators".IEEE Photonics Technology Letters 25.13(2013):1286-1289. |
入库方式： OAI收割
来源：光电技术研究所
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