Phase-Locked Fibre Array for Coherent Combination and Atmosphere Aberration Compensation
HOU Jing, XIAO Rui
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073
Phase-Locked Fibre Array for Coherent Combination and Atmosphere Aberration Compensation
HOU Jing;XIAO Rui
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073
关键词 ：
42.79.Sz ,
42.15.Fr ,
42.55.Wd ,
42.25.Kb
Abstract ： We report a fibre amplifier array that not only achieves coherent beam combination by compensation of phase noises of fibre amplifier, but also accomplishes correction of atmosphere aberration. It is of master-oscillator--multiple-amplifier (MOPA) configuration, which can be phase-locked by the multidither principle or heterodyne detection principle. First laboratory experiments of atmosphere aberration compensation of a three-element fibre amplifier array are reported. The atmosphere aberration is created by a phase screen in the experiment. The phase changes of the beam, which are introduced by the fibre amplifier and the phase screen, are both detected by the heterodyne detection method. Phase modulators are controlled to compensate for the phase in the three paths. No matter whether there is a phase screen producing atmosphere aberration or not, the dim dynamic interference fringes in the far field turn to a clear and stable pattern, and the peak intensity is maximized. It is indicated that the fibre amplifier array is phase-locked, and coherent combination of the three beams is achieved. It can be used not only to obtain high power fibre laser array but also in laser space communication.
Key words ：
42.79.Sz
42.15.Fr
42.55.Wd
42.25.Kb
出版日期: 2006-12-01
引用本文:
HOU Jing;XIAO Rui. Phase-Locked Fibre Array for Coherent Combination and Atmosphere Aberration Compensation[J]. 中国物理快报, 2006, 23(12): 3288-3290.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I12/3288
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