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Observation of 550 MHz passively harmonic mode-locked pulses at L-band in an Er-doped fiber laser using carbon nanotubes film 下载免费PDF全文
We demonstrate a passively harmonic mode-locked(PHML) fiber laser operating at the L-band using carbon nanotubes polyvinyl alcohol(CNTs-PVA) film. Under suitable pump power and an appropriate setting of the polarization controller(PC), the 54~(th) harmonic pulses at the L-band are generated with the side mode suppression ratio(SMSR) better than 44 dB and a repetition frequency of 503.37 MHz. Further increasing the pump power leads to a higher frequency of 550 MHz with compromised stability of 38.5 dB SMSR. To the best of our knowledge, this is the first demonstration on the generation of L-band PHML pulses from an Er-doped fiber laser based on CNTs. 相似文献
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We have demonstrated an all-fiber passively mode locked erbium-doped fiber laser(EDFL) based on graphene–polyvinyl-alcohol film. By watchfully adjusting the polarization controller, two different polarization attractors, including polarization locked vector solitons and a circular attractor, can be observed. This is first time, to the best of our knowledge, to explore the dynamics polarization attractors exhibited by a vector soliton generated from an EDFL based on graphene. 相似文献
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We propose and demonstrate a passively harmonic mode-locked erbium-doped fiber laser(EDFL) using carbon nanotubes polyvinyl alcohol(CNTs-PVA) film. The laser allows generation of the pulses with a repetition rate of 580 MHz, which corresponds to the 22nd harmonics of a 26.3 MHz fundamental repetition rate under 323 mW pump power. A particularly noteworthy feature of the pulses is the super-mode suppression ratio(SMSR), which is over 40 dB, indicating a stable operation. 相似文献
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实验搭建了一台基于碳纳米管的耗散孤子光纤激光器,研究了耗散孤子的动态偏振特性.在160 mW的抽运功率下,得到了稳定的单脉冲耗散孤子.通过调整腔内的偏振控制器,得到了庞加莱球上为固定点形式吸引子的偏振锁定矢量耗散孤子.单向机械调节腔内偏振控制器可以调控偏振锁定吸引子向极限环吸引子的演化,且实现极限环区域可控.对比不同偏振吸引子下的偏振度发现,偏振度的高低和偏振吸引子覆盖区域面积成反比.因此,可以通过偏振度的大小定量地判断吸引子是否为偏振锁定.该工作对于研究新型偏振可调激光器、探索激光器的物理机制具有指导意义. 相似文献
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