强激光与粒子束2013，Vol.25Issue(5)：1125-1128,4.DOI:10.3788/HPLPB20132505.1125
基于外差法的光纤激光器相干合成
Coherent combination of fiber lasers using heterodyne method
摘要
Abstract
The coherent combination system of two fiber lasers based on heterodyne method has been constructed using a 1064 nm, 1 W seed laser. In this system, two graded index (GRIN) lenses with polarization maintaining (PM) fiber is used to receive interference signals for getting better high-contrast strips, compared with interference signals directly received by detectors. The phase noise is studied, and the influence of phase noise on phase control precision is discussed. The phase noise is found to result from electrical crosstalk and environmental perturbation. When the phase noise bandwidth increases, the phase control precision drops. The ways to improve phase control precision are shown. When the phase of two fiber lasers is locked in the experiment, the power in the bucket(PIB) is 21. 3% , the Strehl ratio is 79% , and the phase control precision is 0. 008A.关键词
光纤激光器/相干合成/外差法/相位检测与控制Key words
fiber laser/coherent combination/heterodyne method/phase detection and control分类
信息技术与安全科学引用本文复制引用
王德田,周维军,温伟峰,彭其先,李泽仁,胡文华,李忠建..基于外差法的光纤激光器相干合成[J].强激光与粒子束,2013,25(5):1125-1128,4.基金项目
激光相位检测与控制技术项目(063730) （063730）
