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350-W coherent beam combining of fiber amplifiers with tilt-tip and phase-locking control
Wang, Xiong1; Wang, Xiaolin1; Zhou, Pu1; Su, Rongtao1; Geng, Chao2; Li, Xinyang2; Xu, Xiaojun1; Shu, Bohong1; Wang, X. (wangxiong23@gmail.com)
Source PublicationIEEE Photonics Technology Letters
Volume24Issue:19Pages:1781-1784
2012
Language英语
ISSN10411135
DOI10.1109/LPT.2012.2214769
Indexed BySCI ; Ei
WOS IDWOS:000308961000008
Subtype期刊论文
AbstractWe 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.; 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.
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6319
Collection自适应光学技术研究室(八室)
Corresponding AuthorWang, X. (wangxiong23@gmail.com)
Affiliation1. 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
Recommended Citation
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.,...&Wang, X. .(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.
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