HOLOGRAPHY OF LASER INDUCED PLASMA PLUME

The principle and experiments of double exposure holographic interferometry for measuring plasma plume from an LY12 aluminum target (φ50 ×3mm) irradiated by a Q -Switched Nd: glass Laser beam (50ns , 5 ×10⁹W/cm²) are described. The holographic interference photo was taken by double exposure holography for t = 70.4ns. Using the Abel inversion and Saha equation the holographic interferogram are treated to yield parameters for Laser interactions with materials.