Kosareva O, Panov N, Shipilo D, Mokrousova D, Nikolaeva I, Mitina E, Koribut A, Reutov A, Rizaev G, Couairon A, Houard A, Skryabin D, Saletskiy A, Savel'ev A, Seleznev L, Ionin A, Chin S L
Opt Lett. 2021 Mar 1;46(5):1125-1128. doi: 10.1364/OL.416224.
Pulses at 744 nm with 90 fs duration, 6 mJ energy, and a weakly divergent wavefront propagate for more than 100 m and generate a filament followed by an unprecedently long high intensity (≥1/) light channel. Over a 20 m long sub-section of this channel, the pulse energy is transferred continuously to the infrared wing, forming spectral humps that extend up to 850 nm. From 3D+time carrier-resolved simulations of 100 m pulse propagation, we show that spectral humps indicate the formation of a train of femtosecond pulses appearing at a predictable position in the propagation path.
脉宽为90飞秒、能量为6毫焦且波前微弱发散的744纳米脉冲传播超过100米，产生了一条光丝，随后是一条前所未有的长高强度（≥1/）光通道。在该通道20米长的子段中，脉冲能量持续转移到红外波段，形成延伸至850纳米的光谱峰。通过对100米脉冲传播的三维加时间载流子分辨模拟，我们表明光谱峰表明在传播路径中可预测位置出现了一系列飞秒脉冲。
