{"title":"GHz-Rate, Watt-Level Femtosecond All-Fiber MOPA System Based on Optoacoustically Mode-locked Soliton Fiber Laser With Apodization Filtering","authors":"Jiachen Wu;Kaijun Wu;Benhai Wang;Shunxian Luo;Ruchen Lv;Yu Jiang;Qi Huang;Xintong Zhang;Xiaocong Wang;Wenbin He;Meng Pang","doi":"10.1109/JPHOT.2026.3681293","DOIUrl":null,"url":null,"abstract":"High-power ultrafast fiber lasers are essential tools for a wide range of advanced applications. We report in this paper a GHz-rate, Watt-level all-fiber master oscillator power amplifier (MOPA) femtosecond laser system, seeded by an optoacoustically mode-locked soliton fiber laser. We show both in experiments and numerical simulations that the ubiquitous Kelly sidebands could lead to detrimental splitting of laser pulses at the compression stage through causing some distortions of the seed pulse envelope, and the use of an apodization filter can highly mitigate this impact of Kelly sidebands, resulting in improved output-pulse quality of the MOPA system. The system can deliver ultrafast pulses at 2.56-W average power and 1.879-GHz repetition rate, each pulse being of ∼97-fs duration and 1.4-nJ energy. This work provides an effective spectral engineering strategy for MOPA systems seeded by soliton fiber lasers.","PeriodicalId":13204,"journal":{"name":"IEEE Photonics Journal","volume":"18 3","pages":"1-5"},"PeriodicalIF":2.6000,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11475474","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Photonics Journal","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/11475474/","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/4/6 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
High-power ultrafast fiber lasers are essential tools for a wide range of advanced applications. We report in this paper a GHz-rate, Watt-level all-fiber master oscillator power amplifier (MOPA) femtosecond laser system, seeded by an optoacoustically mode-locked soliton fiber laser. We show both in experiments and numerical simulations that the ubiquitous Kelly sidebands could lead to detrimental splitting of laser pulses at the compression stage through causing some distortions of the seed pulse envelope, and the use of an apodization filter can highly mitigate this impact of Kelly sidebands, resulting in improved output-pulse quality of the MOPA system. The system can deliver ultrafast pulses at 2.56-W average power and 1.879-GHz repetition rate, each pulse being of ∼97-fs duration and 1.4-nJ energy. This work provides an effective spectral engineering strategy for MOPA systems seeded by soliton fiber lasers.
期刊介绍:
Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.