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采用非线性偏振旋转锁模,构建了一种全正色散掺Yb3+光纤环形激光器.在该激光腔内采用了10nm带宽的光纤滤波器提供附加的自振幅调制.通过改变滤波器在腔内的位置,实验证明了滤波器位置对高啁啾脉冲的整形过程起到重要的作用.在320mW的抽运功率下,最终获得平均功率为92.2mW,脉冲重复频率为26.6MHz,脉冲宽度为6.2ps的稳定脉冲输出,单脉冲能量达3.5nJ的优化结果.通过数值模拟与实验结果的验证表明,两者相符很好.
An all-positive-dispersion Yb3 + fiber ring laser was constructed by non-linear polarization rotation mode-locking, and a 10 nm bandwidth fiber filter was used in the laser cavity to provide additional self-amplitude modulation. By changing the position of the filter in the cavity , The experiment proves that the position of the filter plays an important role in the shaping process of the high chirped pulse.The final average power is 92.2mW with the pumping power of 320mW, the pulse repetition frequency is 26.6MHz and the pulse width is 6.2ps Stable pulse output, single-pulse energy up to 3.5nJ.The results of numerical simulation and experimental results show that the two are in good agreement.