Photonics Research, 2020, 8 (12): 12001943, Published Online: Dec. 1, 2020   

First experimental demonstration of coherent beam combining of more than 100 beams Download: 759次

Author Affiliations
1 College of Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
2 e-mail: surongtao@126.com
3 e-mail: zhoupu203@163.com
Abstract
Coherent beam combining of 107 beams has been demonstrated for the first time to the best of our knowledge. When the system was in closed loop, the pattern in far-field was stable and the fringe contrast was >96%. The impact of the dynamic tilt error, the piston error, and power inconsistency was theoretically analyzed. Meanwhile, the distribution law of dynamic tilt error was estimated and the correlation of the tilt dithering of different axis was analyzed statistically. The ratio of power in the central lobe was 22.5%. The phase residue error in the closed loop was λ/22, which was evaluated by the root-mean-square error of the signal generated from the photoelectric detector.

Hongxiang Chang, Qi Chang, Jiachao Xi, Tianyue Hou, Rongtao Su, Pengfei Ma, Jian Wu, Can Li, Man Jiang, Yanxing Ma, Pu Zhou. First experimental demonstration of coherent beam combining of more than 100 beams[J]. Photonics Research, 2020, 8(12): 12001943.

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