利用级联内相位控制技术实现光纤激光器阵列的相干组合

IF 3.3 2区物理与天体物理 Q2 OPTICS

Chinese Optics Letters Pub Date : 2023-01-01 DOI:10.3788/col202321.081402

Jinhu Long, Jiayi Zhang, Hongxiang Chang, Qi Chang, Yu Deng, Zixin Yang, Jian Wu, R. Su, Yanxin Ma, P. Ma, P. Zhou

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引用次数: 1

摘要

实验证明了级联内相位控制技术。将具有12个通道的激光阵列划分为3个子阵列和一级阵列，采用基于随机平行梯度下降(SPGD)算法的4个相位控制器分别锁定子阵列和一级阵列的相位。这样，整个阵列的相位被锁定，整个发射激光阵列的干涉图在远场的可见度为~ 93%。此外，该技术具有单元扩展的优点，由于其空间结构紧凑，可以进一步应用于高功率相干光束组合系统

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Coherent combining of a fiber laser array via cascaded internal phase control technique

We experimentally demonstrated a cascaded internal phase control technique. A laser array with 12 channels was divided into three sub-arrays and a stage array, and phases of the sub-arrays and the stage array were locked by four phase controllers based on the stochastic parallel gradient descent (SPGD) algorithm, respectively. In this way, the phases of the whole array were locked, and the visibility of the interference pattern of the whole emitted laser array in the far field was ∼ 93%. In addition, the technique has the advantage of element expanding and can be further used in the high-power coherent beam combination (CBC) system due to its compact spatial structure

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来源期刊

Chinese Optics Letters 物理-光学

CiteScore

5.60

自引率

20.00%

发文量

180

审稿时长

2.3 months

期刊介绍： Chinese Optics Letters (COL) is an international journal aimed at the rapid dissemination of latest, important discoveries and inventions in all branches of optical science and technology. It is considered to be one of the most important journals in optics in China. It is collected by The Optical Society (OSA) Publishing Digital Library and also indexed by Science Citation Index (SCI), Engineering Index (EI), etc. COL is distinguished by its short review period (~30 days) and publication period (~100 days). With its debut in January 2003, COL is published monthly by Chinese Laser Press, and distributed by OSA outside of Chinese Mainland.