Köttig F, Tani F, Travers J C, Russell P St J
Max Planck Institute for the Science of Light, Staudtstrasse 2, 91058 Erlangen, Germany.
School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
Phys Rev Lett. 2017 Jun 30;118(26):263902. doi: 10.1103/PhysRevLett.118.263902.
We identify a novel regime of soliton-plasma interactions in which high-intensity ultrashort pulses of intermediate soliton order undergo coherent plasma-induced fission. Experimental results obtained in gas-filled hollow-core photonic crystal fiber are supported by rigorous numerical simulations. In the anomalous dispersion regime, the cumulative blueshift of higher-order input solitons with ionizing intensities results in pulse splitting before the ultimate self-compression point, leading to the generation of robust pulse pairs with PHz bandwidths. The novel dynamics closes the gap between plasma-induced adiabatic soliton compression and modulational instability.
我们发现了一种新的孤子 - 等离子体相互作用机制，其中中等孤子阶数的高强度超短脉冲会经历相干的等离子体诱导裂变。在充气空心光子晶体光纤中获得的实验结果得到了严格数值模拟的支持。在反常色散 regime 中，具有电离强度的高阶输入孤子的累积蓝移会导致在最终自压缩点之前发生脉冲分裂，从而产生具有 PHz 带宽的稳健脉冲对。这种新的动力学填补了等离子体诱导的绝热孤子压缩和调制不稳定性之间的空白。
