论文标题
超快激光触发的火花隙的空气流体动力学
Air hydrodynamics of the ultrafast laser-triggered spark gap
论文作者
论文摘要
我们介绍了通过在高电势差的两个电极之间的超快激光脉冲激发引起的空气流体动力学的空间和时间分解测量。我们探索基于等离子体的基于等离子体的间隙激发。前者在飞秒丝发生后使用剩余的等离子体，而后者利用量子分子波袋的多脉冲共振激发来利用空气加热。我们发现，由激光引发的累积电极驱动的空气密度抑郁通道在间隙演化中起主要作用，从而导致崩溃。
We present space and time resolved measurements of the air hydrodynamics induced by ultrafast laser pulse excitation of the air gap between two electrodes at high potential difference. We explore both plasma-based and plasma-free gap excitation. The former uses the plasma left in the wake of femtosecond filamentation, while the latter exploits air heating by multiple-pulse resonant excitation of quantum molecular wavepackets. We find that the cumulative electrode-driven air density depression channel initiated by the laser plays the dominant role in the gap evolution leading to breakdown.
