Author Affiliations
Abstract
1 School of Information Science and Engineering, Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Qingdao, China
2 Key Laboratory of Laser & Infrared System (Shandong University), Ministry of Education, Qingdao, China
3 Institute of Novel Semiconductors, State Key Laboratory of Crystal Materials, Shandong University, Jinan, China
4 Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services, SCCE, University of Science and Technology Beijing, Beijing, China
We firstly report a 2-μm all-fiber nonlinear pulse compressor based on two pieces of normal dispersion fiber (NDF), which enables a high-power scaling ability of watt-level and a high pulse compression ratio of 13.7. With the NDF-based all-fiber nonlinear pulse compressor, the 450-fs laser pulses with a repetition rate of 101.4 MHz are compressed to 35.1 fs, corresponding to a 5.2 optical oscillation cycle at the 2-μm wavelength region. The output average power reaches 1.28 W, which is believed to be the highest value never achieved from the previous 2-μm all-fiber nonlinear pulse compressors with a high pulse repetition rate above 100 MHz. The dynamic evolution of the ultrafast pulse inside the all-fiber nonlinear pulse compressor is numerically analyzed, matching well with the experimental results.
few-optical-cycle pulses high pulse repetition rate nonlinear pulse compression High Power Laser Science and Engineering
2023, 11(1): 01000e14
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
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、****、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。
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 中国激光
2021, 48(12): 1201003
商景诚 1,2,3刘一州 1,2赵圣之 1,2冯天利 1,2,3,*[ ... ]李涛 1,2,3,**
1 山东大学信息科学与工程学院, 山东 青岛 266237
2 山东大学山东省激光技术与应用重点实验室, 山东 青岛 266237
3 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
4 山东大学晶体材料研究所, 山东 济南 250100
光参量啁啾脉冲放大器(OPCPA)在实现高功率、大能量、光学周期量级的超短激光脉冲输出方面极具优势。对具有高脉冲重复频率(≥1 kHz)的OPCPA系统展开研究讨论,全面介绍OPCPA系统的组成;针对不同波段的OPCPA系统,对泵浦源、前端、光参量放大级和压缩器等关键模块分别进行对比和讨论,对限制OPCPA系统性能提升的因素进行分析;最后总结不同输出波长的高重复频率OPCPA系统的研究现状,并对未来的发展方向进行展望。
激光技术 光参量啁啾脉冲放大器 超快激光 高功率 高重复频率 光学周期 中国激光
2021, 48(12): 1201004
Author Affiliations
Abstract
State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering andComputer Science, Peking University, Beijing 100871, China
We report on a compact passive mode-locked Er:fiber ring laser operated at the fundamental repetition rate of 517 MHz, which we believe is the highest fundamental repetition rate ever reported in a ring cavity fiber laser. The key technique is the employment of two innovative high-power wavelength domain multiplexer collimators with all gain fiber cavity suited for the high power (up to 2 W) pumping. The laser is featured with a direct chirpfree output pulse, which is 97 fs without extracavity compression at an average output power of 90 mW.
Ultrafast lasers Ultrafast lasers Lasers Lasers fiber fiber Photonics Research
2016, 4(1): 01000027
Author Affiliations
Abstract
State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
We report femtosecond pulse generation in an amplifier similariton oscillator and a prechirped fiber amplifier system. The final output power is 1.4 W, and the fundamental repetition rate is 19.1 MHz after a single state fiber amplifier. The pulsewidth is 109 fs.
Ultrafast lasers Ultrafast lasers Lasers Lasers fiber fiber Optical amplifiers Optical amplifiers Photonics Research
2015, 3(5): 05000248
