350-W coherent beam combining of fiber amplifiers 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）

	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
卷号	24 期号:19 页码:1781-1784
ISSN号	10411135
通讯作者	Wang, X. (wangxiong23@gmail.com)
中文摘要	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 μ rad. © 1989-2012 IEEE.
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 μ rad. © 1989-2012 IEEE.
学科主题	Amplifiers (electronic) - Fiber lasers - Fibers - Gradient methods - Phase modulation
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000308961000008
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/6319]
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 Optoelectric 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, 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.