高功率超快光纤激光技术发展研究  

Development of High-Power Ultrafast Fiber Laser Technology

作　　者：刘一州 乔文超[1] 高空 徐荣[2] 冯天利 张萌 李珣 梁洋洋 李涛[1,2] Liu Yizhou;Qiao Wenchao;Gao Kong;Xu Rong;Feng Tianli;Zhang Meng;Li Xun;Liang Yangyang;Li Tao(Laser Physics and Technology Laboratory,School of Information Science and Engineering,Shandong University,Qingdao,Shandong 266237,China;China Key Laboratory of Laser&Infrared System(Shandong University),Ministry of Education,Qingdao,Shandong 266237,China;State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics of CAS,Xi’an,Shaanxi 710119,China)

机构地区：[1]山东大学信息科学与工程学院激光物理与技术实验室,山东青岛266237 [2]山东大学激光与红外系统集成技术教育部重点实验室,山东青岛266237 [3]中国科学院西安光学精密机械研究所瞬态光学与光子学国家重点实验室,陕西西安710119

出　　处：《中国激光》2021年第12期33-51,共19页Chinese Journal of Lasers

基　　金：国家重点研发计划(2016YFB1102201);国家自然科学基金(62005144);山东省自然科学基金(ZR2020MF116,ZR2020QF096);山东省泰山学者基金(tsqn201812010);陕西省重点研发计划(S2019-YF-ZDCXL-ZDLGY-0253);山东大学青年学者未来计划;山东大学齐鲁青年学者。

摘　　要：自1960年第一台红宝石激光器问世以来,高速更新换代的固体激光器、光纤激光器、气体激光器和半导体激光器为通信、工业加工与制造、军事国防、前沿科学研究等领域的研究和发展提供了有力的支撑。其中,光纤激光器以其良好的散热特性、出色的激光模式、更高的放大效率、更为紧凑的空间结构和更加低廉的制作成本成为新一代高功率超快激光研发的首选。得益于光纤的波导特性和大比表面积的散热特点,光纤激光器可以在高平均功率状态下实现高光束质量的长期稳定工作。结合啁啾脉冲放大与多通道相干合束的办法,目前高功率超快光纤激光器已经实现了万瓦级平均功率、百飞秒级脉冲宽度的高功率超快激光输出。本文面向高功率超快光纤激光系统,介绍高功率超快光纤激光研究发展现状,协同阐述超快光纤振荡器、光学参量管理、超快光纤放大器和非线性压缩四部分的原理和内在联系,并对高功率超快光纤激光的未来发展方向做出展望。Significance In 1960,after the invention of the first ruby laser,fast-developed solid-state,fiber,gas,and semiconductor lasers provided great support for the research and development of multiple applications,such as optical communication,industrial processing and manufacturing,military and national defense,and state-of-the-art scientific research.Fiber lasers with good heat dissipation characteristics,excellent transverse mode,high amplification efficiency,compact laser construction,and less costs have become the first choice in developing next generation high-power ultrafast lasers.Fiber lasers can achieve long-term operation stability with good beam quality under above-average power because of their waveguide characteristics and large specific gain fiber surface area.High-power ultrafast fiber lasers usually contain four modules,ultrafast fiber oscillators,optical parameters management,ultrafast fiber amplifiers,and nonlinear compression.Ultrafast fiber oscillators provide seed lasers to achieve high-power ultrafast fiber lasers.A qualified mode-locked fiber oscillator has long-term stability and a proportional repetition shared rate corresponding to the requirements of high-power fiber amplifications.Optical parameters management plays a key role in inhibiting uncompensated nonlinear effects and enabling high-energy pulse output with good pulse quality after optical pulse stretching,high power fiber amplification,and optical pulse compression.The ultrafast fiber amplifiers are key modules to scale up the average power of the stretched-signal pulses.Unfortunately,the uncompensated nonlinear phase introduced by the high-peak power of the signal pulse distorts the pulse profile during its propagation in the fiber system.Based on the well-managed optical parameters of fiber lasers,the well-known fiber amplification methods,such as chirped-pulse,divided-pulse,and pre-chirp managed amplifications are making a significant breakthrough in achieving high-power ultrafast fiber lasers.The pulse duration after high-power

关 键 词：激光光学 高功率激光 超快激光 光纤激光 非线性管理 相位管理 

分 类 号：O436[机械工程—光学工程]