Active Phase Locking of Laser Coherent Beam Combination Using Square Wave Dithering Algorithm

被引：4

作者：

Peng, Yingnan ^{[1
]}

Hu, Qiqi ^{[1
]}

Duan, Jiazhu ^{[1
]}

Li, Dapeng ^{[1
]}

Li, Jian ^{[1
]}

Qiao, Ran ^{[1
]}

Shen, Zhixue ^{[1
]}

Luo, Yongquan ^{[1
]}

Zhao, Xiangjie ^{[1
]}

Zhang, Dayong ^{[1
]}

机构：

[1] China Acad Engn Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China

来源：

JOURNAL OF RUSSIAN LASER RESEARCH | 2022年 / 43卷 / 05期

基金：

中国国家自然科学基金;

关键词：

active phase locking; control bandwidth; coherent beam combination; FIBER AMPLIFIERS; ARRAY;

D O I：

10.1007/s10946-022-10089-4

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on a novel demodulation algorithm, we demonstrate a square wave dithering algorithm for active phase locking in the laser coherent beam combination. We investigate theoretically and experimentally the phase-locking performances. The numerical simulation shows that the square wave dithering algorithm possesses a high control bandwidth and a low residual phase error for active phase control. In the experiment, we achieve a stable phase-locking operation of a 7-channel tiled aperture array with a corresponding residual phase error of lambda/22 rms. The square wave dithering algorithm shows superiority on the power scaling and the channel scaling in the laser coherent beam combining system.

引用

页码：626 / 633

页数：8

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