Self-pinching of pulsed laser beams during filamentary propagation.
Self-pinching of pulsed laser beams during filamentary propagation.
复制标题
丝状传播期间脉冲激光束的自收缩。
DOI：
10.1364/oe.17.016429
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发表时间：
2009
期刊：
影响因子：
3.8
通讯作者：
G. Steinmeyer
中科院分区：
文献类型：
--
作者：
C. Brée;A. Demircan;S. Skupin;L. Bergé;G. Steinmeyer
竞争的非线性光学效应，作用于飞秒激光脉冲在自产生的灯丝传播可能会引起一个明显的径向光束变形，类似于脉冲高电流放电的z箍缩收缩。这种自生的空间束收缩伴随着脉冲分裂，其可以有益地用于脉冲的轴上时间压缩。因此，捏机制解释了最近观察到的自压缩和复杂的时空形状典型的细丝传播实验。
Competing nonlinear optical effects that act on femtosecond laser pulses propagating in a self-generated light filament may give rise to a pronounced radial beam deformation, similar to the z-pinch contraction of pulsed high-current discharges. This self-generated spatial beam contraction is accompanied by a pulse break-up that can be beneficially exploited for on-axis temporal compression of the pulse. The pinching mechanism therefore explains the recently observed self-compression and the complicated spatio-temporal shapes typical for filament propagation experiments.