Coherent Beam Combining of Three Watt-Level Fiber Amplifiers Using a DSP-Based Stochastic Parallel Gradient Descent Algorithm

被引：3
|
作者：
Zhou Pu [1 ]
Liu Ze-Jin [1 ]
Wang Xiao-Lin [1 ]
Ma Yan-Xing [1 ]
Li Xiao [1 ]
Xu, Xiao-Jun [1 ]
Guo Shao-Feng [1 ]
机构：
[1] Natl Univ Def Technol, Coll Opt Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2009年 / 26卷 / 04期
关键词：
HIGH-POWER; COMBINATION;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present an experimental study on coherent beam combining of three watt-level fiber amplifiers using a stochastic parallel gradient descent (SPGD) algorithm. Phase controlling is performed by running the SPGD algorithm on a digital-signal-processor (DSP) chip with a voltage updating rate of 16500 times per second. Energy encircled in the target pinhole is 2.62 times more than that in an open loop. The combining efficiency is as high as 87%.
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页数：3
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