基于啁啾补偿的自相似脉冲压缩光栅对的设计  

Design of Self-similar Pulse Compression Grating Pair based on Chirp Compensation

作　　者：李沐霖 张巧芬[2] 史圣达 庞亮雨 高梓皓 LI Mu-lin;ZHANG Qiao-fen;SHI Sheng-da;PANG Liang-yu;GAO Zi-hao(School of Mechanical and Electrical Engineering,Guangdong University of Technology,Guangzhou 510006,China;Key Laboratory of Precision Microelectronic Manufacturing Technology,Guangdong University of Technology,Guangzhou 510006,China)

机构地区：[1]广东工业大学机电工程学院,广州510006 [2]广东工业大学精密微电子制造技术重点实验室,广州510006

出　　处：《光通信研究》2021年第4期56-60,共5页Study on Optical Communications

基　　金：国家自然科学基金资助项目(61705045)。

摘　　要：为了获取优质的超短脉冲光源,文章将自相似脉冲与光栅对结合,通过数值模拟方法详细分析了自相似脉冲的演化和压缩过程。首先将半高全宽(FWHM)为1 ps、能量为45 pJ的高斯脉冲入射到色散渐减光纤中,产生具有强线性啁啾的自相似脉冲,然后利用光栅对对自相似脉冲进行啁啾补偿压缩,最终得到FWHM为80 fs、峰值功率为507.6 W的超短脉冲输出,压缩品质参量Q为0.96,压缩因子为12.5。在此基础上,文章又分析了色散渐减光纤中的三阶色散对光栅对压缩质量的影响,发现随着三阶色散的增加,压缩脉冲品质会显著降低。研究结果表明,当系统中三阶色散效应较小时,利用自相似脉冲与光栅对可得到高功率的超短脉冲。这一结果对超短脉冲的获取是有帮助的。In order to obtain a high-quality ultrashort pulse light source,we combine the self-similar pulse with the grating pair,and analyze the evolution and compression process of the self-similar pulse in detail through a numerical simulation method.We first launch the Full Width at Half Maximum(FWHM)of 1 ps,energy of 45 pJ Gaussian pulses into a dispersion decreasing fiber to generate the chirp self-similar pulse with strong linear characteristic.Then we use the grating self-similar pulse chirp compensation compressor to obtained an ultrashort pulse with FWHM of 80 fs and peak power of 507.6 W.The compression quality parameter Q is 0.96,and the compression factor is 12.5.On this basis,we analyze the influence of the third-order dispersion in the declining fiber on the compression quality of the grating,and find that as the third-order dispersion increases,the compressed pulse quality will be significantly reduced.The results show that when the third-order dispersion effect in the system is small,high-power ultrashort pulses can be obtained by using self-similar pulses and grating pairs.This result is helpful for the acquisition of ultrashort pulses.

关 键 词：自相似脉冲 光栅对 色散渐减光纤 啁啾补偿 三阶色散 

分 类 号：O437[机械工程—光学工程]