潘伟, 陈华龙, 王铁斌, 张宏伟, 金亮, 张贺, 徐英添, 邹永刚, 石琳琳, 马晓辉. 不同浓度Ti:Bi2Te3的调Q光纤激光器[J]. 红外与激光工程, 2020, 49(8): 20190542. DOI: 10.3788/IRLA20190542
引用本文: 潘伟, 陈华龙, 王铁斌, 张宏伟, 金亮, 张贺, 徐英添, 邹永刚, 石琳琳, 马晓辉. 不同浓度Ti:Bi2Te3的调Q光纤激光器[J]. 红外与激光工程, 2020, 49(8): 20190542. DOI: 10.3788/IRLA20190542
Pan Wei, Chen Hualong, Wan Tiebin, Zhang Hongwei, Jin Liang, Zhang He, Xu Yingtian, Zou Yonggang, Shi Linlin, Ma Xiaohui. Q-switched fiber laser with Ti: Bi2Te3 of different concentrations[J]. Infrared and Laser Engineering, 2020, 49(8): 20190542. DOI: 10.3788/IRLA20190542
Citation: Pan Wei, Chen Hualong, Wan Tiebin, Zhang Hongwei, Jin Liang, Zhang He, Xu Yingtian, Zou Yonggang, Shi Linlin, Ma Xiaohui. Q-switched fiber laser with Ti: Bi2Te3 of different concentrations[J]. Infrared and Laser Engineering, 2020, 49(8): 20190542. DOI: 10.3788/IRLA20190542

不同浓度Ti:Bi2Te3的调Q光纤激光器

Q-switched fiber laser with Ti: Bi2Te3 of different concentrations

  • 摘要: 基于二维材料的非线性光开关是调Q光纤激光器的核心器件,二维材料光开关的浓度会直接影响其非线性光学吸收特性,从而改变脉冲的时域特性。因此,针对二维材料浓度对调Q光脉冲的影响进行了研究,并通过实验制作了基于不同浓度Ti: Bi2Te3可饱和吸收光开关,分析了Ti: Bi2Te3浓度对非线性光学吸收特性的影响,获得了调Q光脉冲的调制深度、脉冲宽度、重复频率和单脉冲能量随不同浓度Bi2Te3的变化关系。最终,针对谐振腔参数对Ti:Bi2Te3浓度进行优化,在泵浦功率为71 mW时,获得了中心波长为1 560 nm、脉冲宽度为8 μs,重复频率为14.2 kHz、平均输出功率2.15 mW、对应单脉冲能量为151.4 nJ的脉冲输出。

     

    Abstract: Nonlinear optical switch based on two-dimensional material is the core device of Q-switched fiber laser. The concentration of two-dimensional material optical switch will directly affect its nonlinear optical absorption characteristics, thus change the time-domain characteristics of the pulse. Therefore, the influence of two-dimensional material concentration on Q-switched optical pulse was studied, and a saturable absorption optical switch based on Ti: Bi2Te3 with different concentrations was made through experiments. The influence of Ti: Bi2Te3 concentration on nonlinear optical absorption characteristics was analyzed, and the relationship among the modulation depth, pulse width, repetition frequency and single pulse energy of Q-switched optical pulse with different concentrations Bi2Te3 was obtained. Finally, the Ti:Bi2Te3 concentration was optimized for the resonator parameters. When the pump power is 71 mW, the central wavelength is 1 560 nm, the pulse width is 8 μs, the repetition frequency is 14.2 kHz, the average output power is 2.15 mW, and the corresponding single pulse energy is 151.4 nJ.

     

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