Direct observation of pulse dynamics and self-compression along a femtosecond filament.
Direct observation of pulse dynamics and self-compression along a femtosecond filament.
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DOI：
10.1364/oe.22.022905
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发表时间：
2014-09
期刊：
影响因子：
3.8
通讯作者：
M. Kretschmar;C. Brée;T. Nagy;A. Demircan;H. Kurz;U. Morgner;M. Kovacev
中科院分区：
文献类型：
--
作者：
M. Kretschmar;C. Brée;T. Nagy;A. Demircan;H. Kurz;U. Morgner;M. Kovacev
我们报告的直接实验观察脉冲分裂动力学沿着飞秒灯丝。基本脉冲在传播期间经历显著的自缩短，导致5.3 fs的脉冲持续时间，对应于子3个周期，其在没有外部脉冲压缩的情况下测量。在一个单独的压缩级中可以达到8的压缩系数。基本脉冲传播的理论建模证实了我们观察到的脉冲结构和持续时间，并进一步深入了解非线性动力学过程中的抑制。
We report on the direct experimental observation of pulse-splitting dynamics along a femtosecond filament. The fundamental pulse experiences a significant self-shortening during the propagation leading to pulse durations of 5.3 fs, corresponding to sub-3 cycles, which is measured without external pulse compression. A compression factor of eight could be achieved in a single filamentary stage. Theoretical modeling of the fundamental pulse propagation confirms our observed pulse structures and durations and gives further insight into the nonlinear dynamics during filamentation.