本文对YAG激光诱导介质薄膜产生的等离子体采用Mach-Zehnder干涉仪及光延迟装置进行时间序列分辨多幅干涉记录,并对序列干涉图进行电子密度及等离子体冲击波速度的计算.首次得到脉宽为15ns的1.06μm激光与介质薄膜作用在150ns以内的有关结果.

By using a Maon——Zehnder inter ferometer and an optical delaying system, we made a time-resolved multi-frame interference recording for the plasma on dielectric thin films produced by YAG laser. We have calculated the electron density and plasma shock speed from the series of interforograms, and firstly acquired relevant results about 15 ns pulse width (FWHM) of 1.06 μm laser interacting with dielectric thin films within 150 ns.