Physics Department, International Laser Center, M.V. Lomonosov Moscow State University, Moscow, 119992, Russia.
Opt Lett. 2010 Nov 1;35(21):3640-2. doi: 10.1364/OL.35.003640.
Ionization-assisted spectral broadening of high-energy 10.6 μm laser pulses in a gas-filled hollow waveguide is shown to yield single-cycle pulses with multiterawatt peak powers in the mid-IR. While the highest quality of pulse compression is achieved in the regime of weak ionization, careful management of complex ionization-assisted spectral broadening of guided-wave fields is the key to compressing the output of advanced high-power mid-IR laser sources to single-cycle pulse widths.
在充满气体的空芯波导中，利用离子辅助光谱展宽技术，使高能 10.6μm 激光脉冲展宽，从而在中红外波段获得了具有兆瓦级峰值功率的单周期脉冲。虽然在弱电离条件下可以实现最佳的脉冲压缩效果，但要将先进的高功率中红外激光源的输出压缩到单周期脉冲宽度，关键是要对导波场的复杂的离子辅助光谱展宽进行精细的控制。
