The device of multi-pass-cell (MPC) could broaden the spectra of ultrafast laser pulses based on the self-phase-modulation (SPM) effect, which is composed of two concave mirrors and nonlinear mediums. In this paper, the pulse duration of 172 fs is compressed from a 11.3 ps Nd: YVO₄ regenerative amplifier at the repetition rate of 1 kHz by using two stages of MPC systems. The pulse duration is shortened by a factor of 66, and the pulse energy of 117 μJ is obtained with a total efficiency of 51%. With high average power Nd-doped laser systems at 10 ps level, this method has the potential to generate high power femtosecond lasers with high efficiency, compact configuration, and low cost.

基于两相凹面镜和非线性介质的自相位调制（SPM）效应，多通胞（MPC）装置可以加宽超快激光脉冲的光谱。在本文中，通过使用两级MPC系统，以1 kHz的重复频率从11.3 ps Nd：YVO ₄再生放大器压缩了172 fs的脉冲持续时间。脉冲持续时间缩短了66倍，并且获得了117μJ的脉冲能量，总效率为51％。在10 ps级别的高平均功率Nd掺杂激光系统中，该方法具有产生高效率，紧凑型结构和低成本的高功率飞秒激光的潜力。