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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
卷号: 22, 期号:2, 页码:024206
学科分类: CMOS integrated circuits - Controllers - Fiber lasers - Fiber optics - Gradient methods - Phase modulation
DOI: 10.1088/1674-1056/22/2/024206
通讯作者: Wang, X. (wangxiong23@gmail.com)
文章类型: 期刊论文
中文摘要: 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. © 2013 Chinese Physical Society and IOP Publishing Ltd.
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. © 2013 Chinese Physical Society and IOP Publishing Ltd.
收录类别: SCI ; Ei
语种: 英语
WOS记录号: WOS:000315347100039
ISSN号: 16741056
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6364
Appears in Collections:自适应光学技术研究室(八室)_期刊论文

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作者单位: 1. College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
2. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, 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):024206.
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