Coherent beam combination of adaptive fiber laser array with tilt-tip and phase-locking control

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 自适应光学技术研究室（八室）

	Coherent beam combination of adaptive fiber laser array with tilt-tip and phase-locking control
	Wang, Xiong 1; Wang, Xiao-Lin 1; Zhou, Pu 1; Su, Rong-Tao 1; Geng, Chao 2; Li, Xin-Yang 2; Xu, Xiao-Jun 1; Shu, Bo-Hong 1
刊名	Chinese Physics B
	2013
卷号	22 期号:2 页码:024206
ISSN号	16741056
通讯作者	Wang, X. (wangxiong23@gmail.com)
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.
学科主题	CMOS integrated circuits - Controllers - Fiber lasers - Fiber optics - Gradient methods - Phase modulation
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000315347100039
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/6364]
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.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
推荐引用方式 GB/T 7714	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.
APA	Wang, Xiong.,Wang, Xiao-Lin.,Zhou, Pu.,Su, Rong-Tao.,Geng, Chao.,...&Shu, Bo-Hong.(2013).Coherent beam combination of adaptive fiber laser array with tilt-tip and phase-locking control.Chinese Physics B,22(2),024206.
MLA	Wang, Xiong,et al."Coherent beam combination of adaptive fiber laser array with tilt-tip and phase-locking control".Chinese Physics B 22.2(2013):024206.