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作 者:袁子川 毛丁 戴可 陈跃 麻慧慧 张裕生 陈达如 崔玉栋 Yuan Zichuan;Mao Ding;Dai Ke;Chen Yue;Ma Huihui;Zhang Yusheng;Chen Daru;Cui Yudong(Hangzhou Institute of Advanced Studies,Zhejiang Normal University,Hangzhou 311231,Zhejiang,China;State Key Laboratory of Modern Optical Instrumentation,College of Optical Science and Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China)
机构地区:[1]浙江师范大学杭州高等研究院,浙江杭州311231 [2]浙江大学光电科学与工程学院,浙江杭州310027
出 处:《光学学报》2024年第21期281-287,共7页Acta Optica Sinica
基 金:国家自然科学基金(62305299);浙江省自然科学基金(LQ23F050004)。
摘 要:色散时延干涉仪技术能够实现单次超短时间测量,为实现锁模光纤激光器中的孤子时域动力学提供一种新的测量方法。利用这项技术,基于碳纳米管的被动锁模光纤激光器,进一步研究稳态及呼吸态耗散孤子在建立和湮灭过程中的完整时域动力学演化过程。研究发现,在建立及湮灭过程中,稳态及呼吸态耗散孤子在时域上均表现瞬态衰荡呼吸行为。此外,这种瞬态衰荡呼吸行为的持续时间与泵浦功率存在一定的决定关系。在建立过程中,泵浦功率越低,持续时间越长;在湮灭过程中,泵浦功率越高,持续时间越长。本实验研究了耗散孤子瞬态演化过程中脉冲时域位置变化,这对于深入了解孤子的产生、演化机理,以及对被动锁模光纤激光器的设计、优化及智能化控制都具有重要意义。Objective Dispersive time delay interferometer(DTI)technology enables single-shot ultrashort time measurement,providing a new method for studying the temporal dynamics of solitons in mode-locked fiber lasers.Using this technology,we investigate the complete temporal dynamics of steady-state and breathing-state dissipative solitons in a passive modelocked fiber laser based on carbon nanotubes during their buildup and extinction processes.Our findings show that during both processes,steady-state and breathing-state dissipative solitons exhibit transient decay breathing behavior in the time domain.Furthermore,the duration of this transient decay breathing behavior is influenced by the pump power.Specifically,during the buildup process,a lower pump power results in a longer duration,while during the extinction process,a higher pump power leads to a longer duration.These results are significant for a deeper understanding of soliton generation and evolution,as well as for the design,optimization,and intelligent control of passive mode-locked fiber lasers.Methods We conduct real-time measurements of the complete temporal dynamics evolution of steady-state and breathing dissipative solitons in a passively mode-locked fiber laser under normal dispersion using the DTI technique.By adjusting the pump power,we achieve stable outputs of steady-state and breathing dissipative solitons and use the DTI technique to characterize their temporal dynamics.We measure the buildup and extinction processes of these solitons in real-time by controlling the pump power.During these processes,the pulses exhibit transient oscillatory breathing behavior in the time domain,and the time-domain position of the pulses correlates closely with the pump power.These temporal dynamics are crucial for the design optimization and intelligent control of mode-locked fiber lasers.Results and Discussions By varying the pump power,we observe the buildup of steady-state and breathing dissipative solitons,which occurs in three stages:relaxation oscillation(RO)
关 键 词:超快光学 锁模光纤激光器 耗散孤子 呼吸孤子 色散傅里叶变换 色散时延干涉
分 类 号:TN241[电子电信—物理电子学]
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