摘要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.
Abstract：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.
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
引用本文:
ZHOU Pu;MA Yan-Xing;WANG Xiao-Lin;MA Hao-Tong;XU Xiao-Jun;LIU Ze-Jin. Efficient Phase Locking of Fiber Amplifiers Using a Low-Cost and High-Damage-Threshold Phase Control System[J]. 中国物理快报, 2010, 27(3): 34207-034207.
ZHOU Pu, MA Yan-Xing, WANG Xiao-Lin, MA Hao-Tong, XU Xiao-Jun, LIU Ze-Jin. Efficient Phase Locking of Fiber Amplifiers Using a Low-Cost and High-Damage-Threshold Phase Control System. Chin. Phys. Lett., 2010, 27(3): 34207-034207.
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