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首页> 外文期刊>Applied optics >Suppression of continuous lasing in a carbon nanotube polyimide film mode-locked erbium-doped fiber laser
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Suppression of continuous lasing in a carbon nanotube polyimide film mode-locked erbium-doped fiber laser

机译：碳纳米管聚酰亚胺薄膜锁模掺fiber光纤激光器中连续激光的抑制

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摘要

We demonstrated an erbium-doped mode-locked fiber laser using a single-walled carbon nanotube-dispersed polyimide (SWNT-PI) film. Different mode-locking operations were compared and analyzed utilizing SWNT-PI films with different concentrations (2, 1, and 0.25 wt.percent, respectively). It was found that the continuous single-pulse mode-locking operation was often accompanied by a continuous wave oscillation part for the 1 and 0.25 wt.percent SWNT-PI films, whereas the 2 wt.percent SWNT-PI film presented the most excellent mode-locking performance, thanks to sufficient modulation depth. Using the 2wt.percent SWNT-PI film, a stable pulse train with a pulse width of 840 fs and a repetition rate of 15.3 MHz was achieved. The average output power was 0.33 mW at the pump power of 155 mW under an output coupling ratio of 10percent. Operational performance of the laser cavity when employing the 2 wt.percent SWNT-PI film was also demonstrated.
机译：我们展示了一种使用单壁碳纳米管分散的聚酰亚胺（SWNT-PI）膜的掺-锁模光纤激光器。使用具有不同浓度（分别为2、1，和0.25 wt。％）的SWNT-PI膜比较和分析了不同的锁模操作。结果发现，连续的单脉冲锁模操作通常伴随着SWNT-PI 1和0.25 wt。％膜的连续波振荡部分，而SWNT-PI 2 wt。％膜表现出最优异的模式。足够的调制深度，实现了锁定性能。使用重量百分比为2％的SWNT-PI薄膜，可以获得脉冲宽度为840 fs，重复频率为15.3 MHz的稳定脉冲序列。在输出耦合比为10％时，泵浦功率为155 mW时，平均输出功率为0.33 mW。还证实了当使用2重量％的SWNT-PI膜时激光腔的操作性能。

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