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利用传统的脉冲堆积方法进行脉冲整形时,由于拍频效应会使得堆积出来的整形脉冲出现强度起伏,由于光谱干涉效应会使得堆积出来的脉冲光谱出现强度起伏。针对上述问题,提出了一种基于波分复用思想的啁啾脉冲堆积脉冲整形方法。利用该方法对啁啾脉冲堆积脉冲整形问题展开了理论分析与数值模拟,并将结果与传统的啁啾脉冲堆积脉冲整形技术进行了对比。结果表明,基于波分复用思想的啁啾脉冲堆积脉冲整形方法可以有效地降低拍频效应,得到更为平滑的整形脉冲;且波长间隔越大,脉冲平滑效果就越好。另外,基于波分复用思想的啁啾脉冲堆积脉冲整形方法还可以有效地降低或消除频谱干涉效应。
When the pulse shaping method is used for pulse shaping, the intensity of the accumulated shaping pulse fluctuates due to the beat frequency effect, and the intensity of the stacked pulse spectrum fluctuates due to the spectral interference effect. In order to solve the above problems, a pulse shaping pulse shaping method based on the idea of wavelength division multiplexing is proposed. The method is used to analyze and simulate the chirped pulse stacking pulse shaping problem. The results are compared with the traditional chirped pulse stacking pulse shaping technique. The results show that the chirped pulse stacking pulse shaping method based on the idea of wavelength division multiplexing can effectively reduce the beat frequency effect and obtain a smoother shaping pulse. The larger the wavelength interval, the better the pulse smoothing effect. In addition, the chirped pulse stacking pulse shaping method based on the idea of wavelength division multiplexing can effectively reduce or eliminate spectrum interference effects.