摘要
提出了一种全光纤光程差自适应控制方法,并成功应用于飞秒光纤激光相干偏振合成系统。建立的光程差自适应控制系统以现场可编程门阵列(FPGA)控制电路为硬件基础,基于爬山法设计了有效的控制算法,成功解决了光程差自适应控制与锁相控制相互干扰的问题。实验结果表明,系统可以完全补偿±60λ范围内的光程差漂移,具有良好的连续工作稳定性,可以满足飞秒光纤激光相干偏振合成系统中光程差自适应控制的要求。
An all fiber optical path difference adaptive control method is proposed, and it has been successfully applied to the femtosecond fiber laser coherent polarization combination system. Field programmable gate array （FPGA） control circuit is used as the hardware foundation in the establishment of the optical path difference adaptive control system, and an effective control algorithm is designed based on the hill-climbing algorithm, which can successfully solve the disturbance problem between optical path difference adaptive control and phase-locked control. The experimental results show that the system can completely compensate the optical path difference drift in the range of ± 603, with good continuous working stability, which can meet the requirements of optical path difference adaptive control in the femtosecond fiber laser coherent polarization combination system.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2016年第9期49-55,共7页
Acta Optica Sinica
基金
国家自然科学基金(61378034
61405255)
关键词
光纤光学
飞秒激光
光程差控制
相干偏振合成
爬山法
fiber optics
femtosecond laser
optical path difference control
coherent polarization beamcombination
hill climbing algorithm
