The dispersion scan (d-scan) technique has emerged as a simple-to-implement characterization method for ultrashort laser pulses. D-scan traces are intuitive to interpret and retrieval algorithms that are both fast and robust have been developed to obtain the spectral phase and the temporal pulse profile. Here, we shortly review the second harmonic generation d-scan technique, focusing predominantly on results obtained at the Lund Laser Centre. We describe and compare recent implementations for the characterization of few- and multi-cycle pulses as well as two different approaches for recording d-scan traces in a single shot, thus showing the versatility of the technique.

中文翻译：

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通过二次谐波色散扫描表征超短激光脉冲

色散扫描（d扫描）技术已经成为超短激光脉冲的一种易于实现的表征方法。D扫描轨迹直观易懂，并且已经开发出既快速又鲁棒的算法，以获得频谱相位和时间脉冲轮廓。在这里，我们简要回顾一下二次谐波d扫描技术，主要关注在隆德激光中心获得的结果。我们描述并比较了用于表征小周期和多周期脉冲的最新实现方式，以及用于在单个镜头中记录d扫描轨迹的两种不同方法，从而显示了该技术的多功能性。