用于探测激光等离子体冲击波的光纤传感器(英文)

An optical fiber sensor for detecting laser-induced plasma shock waves

利用探测光束通过轴对称流场时的偏折效应 ,设计了一种光纤传感器 ,并用于探测激光对材料破坏过程中在空气中激发的等离子体冲击波 ,获得了探测位置处激光等离子体冲击波流场折射率随时间的变化率。该方法适用于轴对称流场的瞬态测试 。

We have recently developed an optical fiber sensor based on beam deflection for detecting shock waves. It successfully measured the changing rate of the refractive index of the transient airborne shock waves produced by plasmas in laser material damage processes. This measurement system, particularly suitable for instantaneous detection of axisymmetrical shock waves, is broadband as well as non contact.