摘要
大功率光纤激光器受制于单光纤输出的非线性效应,需要将多个光纤激光器组成光纤激光器阵列进行光束合成,以形成单束聚焦光束,并保证光束在湍流大气中长距离传输后仍可获得高功率、高光束质量的激光输出。以19束激光阵列相干合成系统为例,定量地分析了光束截断因子、角度抖动、湍流传输等因素对相干合成光束的影响,仿真研究了19束激光相干合成的阵列光束的相干传输过程及其在自由空间中的传输特性,用以指导实际激光阵列相干传输系统的建立与运行。
A high-power fiber laser is limited by the nonlinearity of a single-fiber output.Therefore,a beam array must be formed through multiple fiber lasers that output a single focused beam.A high-power high-quality beam output must be ensured after a long-distance transmission through atmospheric turbulence.This study uses an array containing 19 fiber laser beams to design a coherent array synthesis system.The effects of beam truncation factor,angle jitter,and turbulence propagation on coherent synthetic beams are quantitatively analyzed,and the coherent propagation process and their propagation characteristics in free space are simulated to provide references for the establishment of a practical coherent laser array system.
作者
王彤璐
孙鑫鹏
李晔
史俊锋
徐林
李朝阳
臧彦楠
Wang Tonglu;Sun Xinpeng;Li Ye;Shi Junfeng;Xu Lin;Li Zhaoyang;Zang Yannan(Institute of Detection and Countermeasure Technology,China Southern Industrial Academy,Beijing 102209,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2019年第11期71-77,共7页
Laser & Optoelectronics Progress
基金
国防基础科研项目
关键词
光纤光学
激光阵列
大气湍流
合成效率
衍射
fiber optics
beam array
atmospheric turbulence
synthesis efficiency
diffraction
