Haddad Elissa, Safaei Reza, Leblanc Adrien, Piccoli Riccardo, Jeong Young-Gyun, Ibrahim Heide, Schmidt Bruno E, Morandotti Roberto, Razzari Luca, Légaré François, Lassonde Philippe
Opt Express. 2018 Sep 17;26(19):25426-25436. doi: 10.1364/OE.26.025426.
We introduce hydrofluorocarbon molecules as an alternative medium to noble gases with low ionization potential like krypton or xenon to compress ultrashort pulses of relatively low energy in a conventional hollow core fiber with subsequent dispersion compensation. Spectral broadening of pulses from two different laser systems exceeded those achieved with argon and krypton. Initially 40 fs, 800 nm, 120 μJ pulses were compressed to few optical cycles duration. With the same approach a compression factor of more than 10 was demonstrated for an ytterbium-based laser (1030 nm, 170 fs, 200 μJ) leading to 15.6 fs.
我们引入氢氟烃分子作为一种替代介质，以替代氪或氙等具有低电离势的稀有气体，从而在传统的空心光纤中压缩相对低能量的超短脉冲，并随后进行色散补偿。来自两个不同激光系统的脉冲的光谱展宽超过了使用氩气和氪气所实现的展宽。最初40飞秒、800纳米、120微焦的脉冲被压缩至几个光学周期的持续时间。采用相同的方法，基于镱的激光（1030纳米、170飞秒、200微焦）的压缩因子超过了10，得到了15.6飞秒的脉冲。
