Theory of AdmSPGD algorithm in fiber laser coherent synthesis

doi:10.1016/j.optcom.2021.126953

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	Theory of AdmSPGD algorithm in fiber laser coherent synthesis
	D. Che; Y. Li; Y. Wu; J. Song and T. Wang
刊名	Optics Communications
	2021
卷号	492
ISSN号	304018
DOI	10.1016/j.optcom.2021.126953
英文摘要	The stochastic parallel gradient descent (SPGD) algorithm is one of the promising approaches for performing an efficient coherent beam combining (CBC) for power-scaling of the fiber lasers. However, this algorithm likewise suffers from certain shortcomings, including slow convergence speed and ease catching into local extremes. This paper proposes an AdmSPGD algorithm that modifies the conventional one with adaptive gain and momentum. Notably, the adaptive gain coefficient improves convergence speed by adjusting such gain coefficient in realtime, while the momentum factor suppresses high-frequency interference by adjusting update direction. The proposed algorithm is testified through relevant simulations and experiments, whose results depict that the proposed algorithm can significantly increase convergence speed, robustness and effective bandwidth in the fiber laser beam combining system. 2021 Elsevier B.V.
URL标识	查看原文
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/65689]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	D. Che,Y. Li,Y. Wu,et al. Theory of AdmSPGD algorithm in fiber laser coherent synthesis[J]. Optics Communications,2021,492.
APA	D. Che,Y. Li,Y. Wu,&J. Song and T. Wang.(2021).Theory of AdmSPGD algorithm in fiber laser coherent synthesis.Optics Communications,492.
MLA	D. Che,et al."Theory of AdmSPGD algorithm in fiber laser coherent synthesis".Optics Communications 492(2021).