350-W Coherent Beam Combining of Fiber Amplifiers With Tilt-Tip and Phase-Locking Control

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	350-W Coherent Beam Combining of Fiber Amplifiers With Tilt-Tip and Phase-Locking Control
	Wang, Xiong 1; Wang, Xiaolin 1; Zhou, Pu 1; Su, Rongtao 1; Geng, Chao 2; Li, Xinyang 2; Xu, Xiaojun 1; Shu, Bohong 1
刊名	IEEE PHOTONICS TECHNOLOGY LETTERS
	2012-10-01
卷号	24 期号:19 页码:1781-1784
关键词	Coherent beam combining (CBC) fiber laser high power fiber amplifier tilt-tip control
英文摘要	We demonstrate the coherent beam combining (CBC) of a 350-W single-frequency fiber amplifier array with simultaneous tilt-tip control and phase-locking control. An adaptive fiber-optics collimator is employed to perform the tilt-tip control, and the phase-locking control is realized by the phase modulator. The fiber array in the CBC system consisted of two high-power fiber amplifiers, each with output power of about 175 W. Stochastic parallel gradient descent algorithm is employed in both tilt-tip and phase-locking control. The tilt-tip control makes two separate laser beams overlap with each other in the far field, while the phase-locking control compensates the piston phase differences between the fiber lasers. Normalized power in bucket increases from 0.27 in open loop to 0.99 in closed loop. The fringe contrast is improved from 0% to more than 97% correspondingly. The tilt-tip control bandwidth is higher than 5.4 Hz when the tilt-tip mean square error is 10 mu rad.
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]	COLLIMATORS ; COMBINATION ; ARRAYS
收录类别	SCI
语种	英语
WOS记录号	WOS:000308961000008
公开日期	2015-12-24
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/2339]
专题	光电技术研究所_光电技术研究所被WoS收录文章
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
推荐引用方式 GB/T 7714	Wang, Xiong,Wang, Xiaolin,Zhou, Pu,et al. 350-W Coherent Beam Combining of Fiber Amplifiers With Tilt-Tip and Phase-Locking Control[J]. IEEE PHOTONICS TECHNOLOGY LETTERS,2012,24(19):1781-1784.
APA	Wang, Xiong.,Wang, Xiaolin.,Zhou, Pu.,Su, Rongtao.,Geng, Chao.,...&Shu, Bohong.(2012).350-W Coherent Beam Combining of Fiber Amplifiers With Tilt-Tip and Phase-Locking Control.IEEE PHOTONICS TECHNOLOGY LETTERS,24(19),1781-1784.
MLA	Wang, Xiong,et al."350-W Coherent Beam Combining of Fiber Amplifiers With Tilt-Tip and Phase-Locking Control".IEEE PHOTONICS TECHNOLOGY LETTERS 24.19(2012):1781-1784.