Hauri C P, Lopez-Martens R B, Blaga C I, Schultz K D, Cryan J, Chirla R, Colosimo P, Doumy G, March A M, Roedig C, Sistrunk E, Tate J, Wheeler J, Dimauro L F, Power E P
Laboratorie d'Optique Appliquée, ENSTA Ecole Polytechnique, CNRS UMR 7639, Palaiseau, France.
Opt Lett. 2007 Apr 1;32(7):868-70. doi: 10.1364/ol.32.000868.
We report the compression of intense, carrier-envelope phase stable mid-IR pulses down to few-cycle duration using an optical filament. A filament in xenon gas is formed by using self-phase stabilized 330 microJ 55 fs pulses at 2 microm produced via difference-frequency generation in a Ti:sapphire-pumped optical parametric amplifier. The ultrabroadband 2 microm carrier-wavelength output is self-compressed below 3 optical cycles and has a 270 microJ pulse energy. The self-locked phase offset of the 2 microm difference-frequency field is preserved after filamentation. This is to our knowledge the first experimental realization of pulse compression in optical filaments at mid-IR wavelengths (lambda>0.8 microm).
我们报告了利用光丝将高强度、载波包络相位稳定的中红外脉冲压缩至少周期持续时间的情况。在氙气中形成光丝，是通过在钛宝石泵浦的光学参量放大器中利用差频产生的自相位稳定的330微焦、55飞秒、波长为2微米的脉冲实现的。超宽带2微米载波波长输出在3个光学周期以下实现了自压缩，且脉冲能量为270微焦。2微米差频场的自锁相位偏移在成丝后得以保留。据我们所知，这是中红外波长（λ>0.8微米）光丝中脉冲压缩的首次实验实现。
