Coherent Beam Combination of Eight Watt-Level Polarization-Maintained Fiber Amplifiers

• 作者: 刘泽金 周朴 王小林 许晓军 马浩统 马阎星
• 来源期刊: 中国物理快报(英文版)
• 学科: 工学
• 关键词: 光纤放大器 相干光束 偏振 瓦级 数字信号处理器 维护 梯度下降算法 信号产生
• 年，卷（期）: 2010,（3）
• 页码范围: 159-161
• 页数: 3页
• 分类号: TN929.11 O436.1
• 语种: 英文

摘要

We demonstrate the coherent beam combination of eight Watt-level polarization-maintained fiber amplifiers. The phase control signal of each amplifier is generated by running a stochastic parallel gradient descent algorithm on a digital signal processor (DSP). The experimental result shows that the whole system in close-loop performs well for long-time observation. Energy encircled in the target pinhole is 6.68 times more than that in open-loop. The combination efficiency is as high as 84.5%.