arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.6529physics.optics
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利用拓扑绝缘体锁模光纤laser产生飞秒脉冲

Femtosecond pulse generation from a Topological Insulator mode-locked fiber laser

Hao Liu, Xu-Wu Zheng, Meng Liu, Nian Zhao, Ai-Ping Luo, Zhi-Chao Luo, Wen-Cheng Xu, Han Zhang, Chu-Jun Zhao, Shuang-Chun Wen

摘要:

报道了利用聚乙烯醇(PVA)基拓扑绝缘体(TI)和Bi_2Se_3可饱和吸收体(SA)在色散光纤环形激光器中产生飞秒脉冲的实验研究。PVA-TI复合材料具有12 MW/cm 2的低饱和光强度和~ 3.9%的调制深度。通过将所制备的PVA-TISA结合到光纤激光器中,可以在25 mW的低泵浦阈值下实现锁模操作。通过对腔参数的优化,获得了中心波长为1557.5nm、脉宽约660 fs的光脉冲。实验结果表明,PVA是制备高性能TISA的良好基质材料,薄膜状PVA-TISA是制备超快可饱和吸收器件的理想材料。

英文摘要:

We reported on the generation of femtosecond pulse in an anomalous-dispersion fiber ring laser by using a polyvinyl alcohol (PVA)-based Topological Insulator (TI), Bi2Se3 saturable absorber (SA). The PVA-TI composite has a low saturable optical intensity of 12 MW/cm2 and a modulation depth of ~3.9%. By incorporating the fabricated PVA-TISA into a fiber laser, mode-locking operation could be achieved at a low pump threshold of 25 mW. After an optimization of the cavity parameters, optical pulse with ~660 fs centered at 1557.5 nm wavelength had been generated. The experimental results demonstrate that the PVA could be an excellent host material for fabricating high-performance TISA, and also indicate that the filmy PVA-TISA is indeed a good candidate for ultrafast saturable absorption device.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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