Efficient Phase Locking of Fiber Amplifiers Using a Low-Cost and High-Damage-Threshold Phase Control System

We propose a low-cost and high-damage-threshold phase control system that employs a piezoelectric ceramic transducer modulator controlled by a stochastic parallel gradient descent algorithm. Efficient phase locking of two fiber amplifiers is demonstrated. Experimental results show that energy encirc...

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Bibliographic Details
Published in:Chinese physics letters 2010-03, Vol.27 (3), p.174-176
Main Author: 周朴 马阎星 王小林 马浩统 许晓军 刘泽金
Format: Article
Language:English
Subjects:
Algorithms
Amplifiers
Fiber lasers
Fibers
Locking
Modulators
Phase control
Transducers
低成本
光纤放大器
损伤阈值
控制系统
高功率光纤激光器
高效利用
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Summary:We propose a low-cost and high-damage-threshold phase control system that employs a piezoelectric ceramic transducer modulator controlled by a stochastic parallel gradient descent algorithm. Efficient phase locking of two fiber amplifiers is demonstrated. Experimental results show that energy encircled in the target pinhole is increased by a factor of 1.76 and the visibility of the fringe pattern is as high as 90% when the system is in close-loop. The phase control system has potential in phase locking of large-number and high-power fiber laser endeavors.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/3/034207