通过研究飞秒激光在空气中形成等离子体通道的导电特性, 提出一种获得长寿命、长距离的等离子体通道的实验方法。研究结果表明, 采用飞秒激光脉冲序列电离大气有望获得长寿命、长距离的导电通道, 从而为激光等离子体通道诱导放电技术的发展奠定理论和技术基础。

The electric conductivity of air plasma channel induced by femtosecond laser is researched. Based on this mechanism, an experimental method of the plasma channel for long life and long distance is proposed. The research results show that long life and long distance conductive channel can be obtained from air plasma induced by femtosecond laser sequences, which paves theoretical and technological basis for developing of the plasma channel discharging technology induced by femtosecond laser.