智能锁模光纤激光器的原理与研究进展  

Principles and Research Advances of Intelligent Mode⁃Locked Fiber Lasers

作　　者：吴修齐 彭俊松 张颖 曾和平[1,2,3] Wu Xiuqi;Peng Junsong;Zhang Ying;Zeng Heping(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China;Chongqing Institute of East China Normal University,Chongqing 401120,China;Jinan Institude of Quantum Technology,Jinan 250101,Shandong,China)

机构地区：[1]华东师范大学精密光谱科学与技术国家重点实验室,上海200062 [2]华东师范大学重庆研究院,重庆401120 [3]济南量子技术研究院,山东济南250101

出　　处：《中国激光》2023年第11期76-95,共20页Chinese Journal of Lasers

基　　金：国家自然科学基金(62022033,12074122,11704123,61775059,62022033,12074122);上海市市级科技重大专项子项目(2019SHZDZX01-ZX05);上海市青年科技启明星计划;National Key Laboratory Foundation of China(6142411196307);Sustainedly Supported Foundation by National Key Laboratory of Science and Technology on Space Microwave under Grant(2022-WDKY-SYS-DN-04);上海市自然科学基金(23ZR1419000)。

摘　　要：近年来,智能光子学领域取得了蓬勃发展。其中,机器学习算法与超快光学的结合展现出了巨大潜力,不仅给超快光学系统带来了新功能,也极大地提升了系统的性能。特别地,机器学习已在锁模激光器中获得了广泛应用。本文着重介绍机器学习算法及控制系统在超快光纤激光器中的应用,包括产生和操控孤子锁模脉冲、时空锁模脉冲、呼吸子脉冲以及分形呼吸子。Significance The invention of laser technology has had a transformative impact on society.Mode-locked fiber lasers have been widely used in research and industry,and they play an important role in basic science as a convenient nonlinear system.A modelocked fiber laser is a complex nonlinear dissipative system with a large number of internal nonlinear dynamical phenomena that,in addition to outputting stable femtosecond pulses,exhibits a series of complex mode-locked states,including the breather locked mode,strange waves,noise-like locked modes,soliton explosions,and self-organized modes arising from soliton interactions,such as soliton molecules,soliton crystals,soliton complexes,and supramolecular structures.Even chaotic states have recently been discovered in mode-locked lasers.The study of these mode-locked states helps to understand the nonlinear dynamical properties of femtosecond fiber lasers.Additionally,because the femtosecond fiber laser is a universal nonlinear dissipative system,studying its dynamics can clarify the complex dynamics in related fields,such as Bose-Einstein condensation,microcavities,and oceanography.The intrinsic dynamics of these systems and the mode-locked laser are described uniformly by the nonlinear Schrödinger equation and thus have similarities.Owing to the presence of numerous mode-locked regions in mode-locked lasers,it has long been a challenging problem to control the parameters of the laser and thus access specific mode-locked states.For example,the most commonly used femtosecond fiber laser based on the nonlinear polarization rotational mode-locking technique is mathematically a multidimensional parametric space and experimentally requires tuning of at least seven parameters(pump,loss,dispersion,nonlinearity,and angles of the three waveplates)to traverse the entire parametric space.Because of the lack of a definite functional relationship between the mode-locking state and these parameters,a long trial-and-error process is needed to obtain the desired mode-locking state.I

关 键 词：激光器 锁模 孤子 呼吸子 智能 

分 类 号：O436[机械工程—光学工程]