光纤啁啾脉冲时域相干合成技术研究新进展  

Recent progress of temporal coherent combination ofchirped pulses in fiber lasers

作　　者：刘必达 黄智蒙 张帆[1] 夏汉定[1] 周丹丹[1] 李剑彬 郑钧文 张锐[1] 李平[1] 彭志涛[1] 朱启华[1] 胡东霞[1] Liu Bida;Huang Zhimeng;Zhang Fan;Xia Handing;Zhou Dandan;Li Jianbin;Zheng Junwen;Zhang Rui;Li Ping;Peng Zhitao;Zhu Qihua;Hu Dongxia(Laser Fusion Research Center,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院激光聚变研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2023年第11期1-16,共16页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(62075201)。

摘　　要：脉冲时域相干合成技术主要通过对功率放大后的高重频脉冲序列进行时序合成,从而降低激光的重复频率,有效地提升输出脉冲的峰值功率与能量,避免放大过程中高峰值功率引起的非线性效应。该技术与空域相干合成相结合,能够突破单纤激光的性能极限,实现高能量、高平均功率和高峰值功率的超短脉冲激光输出,具有广阔的应用前景。介绍了超短脉冲光纤激光时域相干合成的基本原理和关键技术,综述了时域相干合成系统的发展历程及其关键技术的研究现状,重点介绍了近年来脉冲分割放大与脉冲相干堆积技术的研究进展,并对时域相干合成的不同技术路线进行了分析与比较,最后对其未来的发展方向进行了梳理,为相关领域的研究提供参考。Temporal coherent combination further extends the pulse duration by assembling many pulses in atrain passed through the amplifier into one output pulse,which can improve the peak power and pulse energyeffectively and avoid nonlinear effects excited by the high peak power in the amplification.Spatial and temporal pulsecombination can overcome limitations in single fiber laser,potentially leading to higher pulse energy,average powerand peak power of ultrafast pulses currently only available from bulk amplifiers with low repetition rates.In this paper,the principles and key technologies of temporal coherent combination of ultrafast pulses in fiber lasers are introduced.The current status of temporal coherent combination and their technologies are reviewed.Recent progress of DividedPulse Amplification(DPA)and Coherent Pulse Stacking(CPS)is emphasized.Different technical ways are comparedand analyzed.Several future perspectives are pointed out.The paper can be a reference for research on temporalcoherent combination of chirped pulses.

关 键 词：光纤激光 超短脉冲 时域相干合成 啁啾脉冲 

分 类 号：TN248[电子电信—物理电子学]