Centro de Láseres Pulsados, CLPU, E-37008, Salamanca, Spain.
Opt Lett. 2010 Nov 1;35(21):3649-51. doi: 10.1364/OL.35.003649.
Self-compressed (SC) pulses have been achieved through the filamentation process in air without any additional dispersion compensation, using the input pulse chirp as the control parameter. For any studied input pulse energy (3-5 mJ), we have found two opposite sign input group-delay dispersion values for which SC pulses can be achieved systematically. In addition, we have observed that the energy coupled into the inner core of the filament is always of the order of 20% of the total input pulse energy, which opens the way to a scalable technique to obtain intense short pulses directly from the filamentation process.
自压缩（SC）脉冲已经通过在空气中的细丝化过程实现，而无需任何额外的色散补偿，使用输入脉冲啁啾作为控制参数。对于任何研究的输入脉冲能量（3-5 mJ），我们发现了两个相反符号的输入群延迟色散值，对于这两个值，可以系统地实现 SC 脉冲。此外，我们还观察到，耦合到细丝内部核心的能量始终约为总输入脉冲能量的 20%，这为从细丝化过程直接获得强短脉冲的可扩展技术开辟了道路。
