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目标在回路光纤激光阵列自适应锁相技术研究

Study of Target-in-the-Loop Fiber Laser Array Adaptive Phase-Locking Technique

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摘要

对目标在回路(TIL)光纤激光阵列自适应锁相技术开展了理论与实验研究。介绍了目标在回路自适应锁相光纤激光阵列的基本结构和单抖动法的基本原理。搭建了两路高功率光纤放大器,利用信号处理器执行单抖动算法,实时控制光束的相位,实现了两路10 W级光纤放大器的目标在回路自适应相位锁定。实验结果表明,目标在回路自适应锁相光学系统能够有效控制光纤激光的相位噪声,实现阵列光束的相位锁定,光斑对比度可提高到73%。

Abstract

The target-in-the-loop (TIL) fiber laser array adaptive phase-locking technique is studied theoretically and experimentally. The system configurations of TIL adaptive phase-locked fiber laser array and the fundamental theory for single-dithering algorithm are introduced. The performance of TIL adaptive phase-locked fiber laser array under high-power laser is studied. Two high-power fiber amplifiers are set up and the adaptive phase-locking of two 10-W-level fiber amplifiers is accomplished by implementing single-dithering algorithm on a signal processor. The experimental results demonstrate that the optical phase noise for each beam channel can be effectively controlled by the TIL adaptive optics system and the fringe contrast is increased to 73%.

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中图分类号:TN248.1

DOI:10.3788/cjl201138.0702012

所属栏目:激光物理

收稿日期:2011-02-14

修改稿日期:2011-03-10

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陶汝茂:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
马阎星:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
董小林:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
司磊:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
邹永超:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
周朴:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073
刘泽金:国防科学技术大学光电科学与工程学院, 湖南 长沙 410073

联系人作者:陶汝茂(taorumao@sohu.com)

备注:陶汝茂(1987—),男,硕士研究生,主要从事高能激光技术等方面的研究。

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引用该论文

Tao Rumao,Ma Yanxing,Dong Xiaolin,Si Lei,Zou Yongchao,Zhou Pu,Liu Zejin. Study of Target-in-the-Loop Fiber Laser Array Adaptive Phase-Locking Technique[J]. Chinese Journal of Lasers, 2011, 38(7): 0702012

陶汝茂,马阎星,董小林,司磊,邹永超,周朴,刘泽金. 目标在回路光纤激光阵列自适应锁相技术研究[J]. 中国激光, 2011, 38(7): 0702012

被引情况

【1】马阎星,司磊,董小林,周朴,许晓军. 抖动法激光阵列相干合成技术中的性能评价函数研究. 中国激光, 2012, 39(2): 202003--1

【2】陈波,李新阳. 基于随机并行梯度下降算法的自适应光学系统带宽. 激光与光电子学进展, 2013, 50(3): 30101--1

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