Laser induced breakdown on the output surface of calcium fluoride produces distinctive visualization of the gaseous material ejection via time-resolved shadowgraphy microscopy. This characteristic behavior allowed a detailed investigation of the directional expansion of the plume at ambient atmospheric conditions and its spatial separation and influence on the forming shockwave. The results also suggest that the material ejection is prolonged, extending more than 300 ns after the termination of the laser pulse. The dynamics of the backward motion of the gaseous material following its initial expansion is also resolved.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)