We investigate numerically the effect of introducing stretching-induced initial chirp on the soliton-effect pulse compression. We find both the positive and negative initial chirps can lead to improved compression, but through different mechanisms. With the positive initial chirp, the amount of stretching that yields the best achievable compression decreases for an increasing soliton number, whereas with the negative initial chirp, it increases. Moreover, we observe that the compression length can be substantially altered by stretching the pump, and it can even be shorter than that for the transform-limited pump within a small range of positive initial chirp. We note also, the stretching factor that gives the shortest pulse output extends the compression length by 1.23 times for any given soliton order. This study demonstrates that the soliton-effect compression can be readily controlled and optimised by placing a variable stretching element beforehand. It is useful especially i...

中文翻译：

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通过泵的拉伸调整孤子效应压缩

我们在数值上研究了引入拉伸诱导的初始chi对孤子效应脉冲压缩的影响。我们发现，正弦和负弦的初始线性调频脉冲都可以改善压缩效果，但是会通过不同的机制。初始initial正时，孤子数增加可产生最佳可压缩程度的拉伸量减少，而初始whereas负时，则增加。此外，我们观察到，可以通过拉伸泵来显着改变压缩长度，并且在正初始rp的小范围内，压缩长度甚至可以比变换限制泵短。我们还注意到，对于任何给定的孤子阶数，给出最短脉冲输出的拉伸因子将压缩长度延长了1.23倍。这项研究表明，通过预先放置可变拉伸元件，可以容易地控制和优化孤子效应压缩。这对我特别有用。