光纤激光相干合成高速高精度相位控制器

Su Rongtao; Zhou Pu; Wang Xiaolin; Han Kai; Xu Xiaojun

doi:10.3788/HPLPB20122406.1290

Volume 24 Issue 06

May 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(06): 1290-1294

Su Rongtao, Zhou Pu, Wang Xiaolin, et al. 光纤激光相干合成高速高精度相位控制器[J]. High Power Laser and Particle Beams, 2012, 24: 1290-1294. doi: 10.3788/HPLPB20122406.1290

Citation:

Su Rongtao, Zhou Pu, Wang Xiaolin, et al. 光纤激光相干合成高速高精度相位控制器[J]. High Power Laser and Particle Beams, 2012, 24: 1290-1294. doi: 10.3788/HPLPB20122406.1290

Su Rongtao, Zhou Pu, Wang Xiaolin, et al. 光纤激光相干合成高速高精度相位控制器[J]. High Power Laser and Particle Beams, 2012, 24: 1290-1294. doi: 10.3788/HPLPB20122406.1290

Citation:

Su Rongtao, Zhou Pu, Wang Xiaolin, et al. 光纤激光相干合成高速高精度相位控制器[J]. High Power Laser and Particle Beams, 2012, 24: 1290-1294. doi: 10.3788/HPLPB20122406.1290

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光纤激光相干合成高速高精度相位控制器

doi: 10.3788/HPLPB20122406.1290

1.
College of Opto-electric Science and Engineering,National University of Defense Technology,Changsha 410073,China

Received Date: 2011-09-13
Rev Recd Date: 2011-11-08
Publish Date: 2012-06-15

Abstract

Abstract

基于随机并行梯度下降算法（SPGD）和现场可编程逻辑阵列（FPGA）设计制作了相干合成（CBC）相位控制器。理论分析表明，该控制器单次迭代速率大于1.125 MHz，对于2路和16路相干合成，其平均控制带宽的理论值分别大于70 kHz和9 kHz，与现有的SPGD算法相位控制器相比有了量级上的提高。利用该控制器进行了验证性实验，表明该控制器能够实现高速高精度相位控制。当利用相位控制器对两路激光的相位进行锁定时，目标圆孔内能量提高了1.51倍，远场光斑对比度提高了5.29倍。
- fiber laser,
- coherent beam combining,
- stochastic parallel gradient descent algorithm,
- phase controller,
- fpga