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作 者:曾和平[1,2,3,4] 吴修齐 彭俊松 ZENG Heping;WU Xiuqi;PENG Junsong(State Key Laboratory of Precision Spectroscopy,East China Normal University,Shanghai 200062,China;Chongqing Institute of East China Normal University,Chongqing 401120,China;Shanghai Research Center for Quantum Sciences,Shanghai 200062,China;Chongqing Institute for Brain and Intelligence,Chongqing 401120,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]上海量子科学研究中心,上海200062 [4]重庆脑与智能科学中心,重庆401120
出 处:《计测技术》2024年第3期3-20,共18页Metrology & Measurement Technology
基 金:国家自然科学基金项目(11621404,11561121003,11727812,61775059,12074122,62022033,11704123,62035005);上海市科技重大专项项目(2019SHZDZX01-ZX05);上海市基础科学基金创新计划项目(18JC1412000);上海市自然科学基金项目(23ZR1419000);中国博士后科学基金项目(2023M741188,2024T170275)。
摘 要:介绍了单通光纤中的孤子分形、矢量孤子碰撞中的分形、自旋波孤子中的分形、呼吸子激光中的分形等激光器中存在的典型分形结构及相关调控方法,阐述了锁模激光器中分形激光频谱密度高、调谐精度高、能够实现高分辨力飞秒光纤光梳等特点。探讨了提升飞秒光纤光梳分辨力的问题,指出利用呼吸子激光中的魔鬼阶梯和法里树分形结构,结合智能调谐手段可提升飞秒光纤光梳的探测分辨力。展望了呼吸子分形光梳在分子光谱、任意光波合成等领域的发展方向,指出未来通过发展光频域高精度锁定技术、时频相位全息跟踪探测技术、分形频谱关联与相噪分析技术,并优化理论模型,有望进一步抑制光梳的噪声,并突破谱密度极限。This review introduces typical fractal structures and related control methods present in lasers,such as soliton fractals in single-pass optical fibers,fractals in vector soliton collisions,fractals in spin wave solitons,and fractals in breather lasers.It elucidates the characteristics of fractal lasers in mode-locked lasers,including high spectral density,strong anti-interference capabilities,high tuning precision,and the ability to achieve high-resolution femtosecond fiber combs.The paper discusses the issue of enhancing the resolution of femtosecond fiber combs,pointing out that using devil's staircase and Farey tree fractal structures in breather lasers,combined with intelligent tuning methods,can improve the detection resolution of femtosecond fiber combs.It forecasts the development directions of breather fractal combs in fields such as molecular spectroscopy and arbitrary optical wave synthesis.The paper suggests that by developing high-precision optical frequency domain locking technology,time-frequency phase holographic tracking detection technology,fractal spectrum correlation and phase noise analysis technology,and optimizing theoretical models,it is expected to further suppress comb noise and break through the spectral density limits.
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