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题名:
Coherent beam combination of adaptive fiber laser array with tilt-tip and phase-locking control
作者: Wang Xiong1; Wang Xiao-Lin1; Zhou Pu1; Su Rong-Tao1; Geng Chao2; Li Xin-Yang2; Xu Xiao-Jun1; Shu Bo-Hong1
刊名: CHINESE PHYSICS B
出版日期: 2013-02-01
卷号: 22, 期号:2
关键词: coherent beam combining ; tilt-tip control ; phase-locking control ; adaptive fiber-optics collimator
文章类型: Article
英文摘要: We present an experimental study on tilt-tip (TT) and phase-locking (PL) control in a coherent beam combination (CBC) system of adaptive fiber laser array. The TT control is performed using the adaptive fiber-optics collimator (AFOC), and the PL control is realized by the phase modulator (PM). Cascaded and simultaneous controls of TT and PL using stochastic parallel gradient descent (SPGD) algorithm are investigated in this paper. Two-fiber-laser-, four-fiber-laser-, and six-fiber-laser-arrays are employed to study the TT and PL control. In the cascaded control system, only one high-speed CMOS camera is used to collect beam data and a computer is used as the controller. In a simultaneous control system one high-speed CMOS camera and one photonic detector (PD) are employed, and a computer and a control circuit based on field programmable gate array (FPGA) are used as the controllers. Experimental results reveal that both cascaded and simultaneous controls of TT using AFOC and PL using PM in fiber laser array are feasible and effective. Cascaded control is more effective in static control situation and simultaneous control can be applied to the dynamic control system directly. The control signals of simultaneous PL and TT disturb each other obviously and TT and PL control may compete with each other, so the control effect is limited.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
关键词[WOS]: COLLIMATORS ; OPTICS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000315347100039
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/1218
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.Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China

Recommended Citation:
Wang Xiong,Wang Xiao-Lin,Zhou Pu,et al. Coherent beam combination of adaptive fiber laser array with tilt-tip and phase-locking control[J]. CHINESE PHYSICS B,2013,22(2).
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