@inproceedings{cecb0645f2d64c34a8f29bcb537e148a,
title = "Shockwave observation of femtosecond laser ablation on Si3N4 ceramic",
abstract = "Processing the Si3N4 ceramic is a big challenge because of its high hardness and brittleness. Femtosecond (fs) laser is an excellent method to process the Si3N4 ceramic. However, the temporal evolution of the fs laser induced plasma from the initialization to the disappearance is still lacking for deeply understanding the laser-matter mechanisms. In this study, we employ the pump-probe shadowgraphy and the ultrafast plasma imaging to observe the whole shockwave evolution on Si3N4 ceramic. We find that the shockwave propagates in a spherical law and the velocity of shockwave decreases rapidly in the first 50 ns, and finally approaches to the speed of sound at the delay of 430 ns. The relationship between plasma melting, expansion and shockwave propagation was revealed to provide further insight into the fs laser ablation of Si3N4 ceramic.",
keywords = "Femtosecond laser, Interaction mechanism, Observation, SiN ceramic",
author = "Feng Tian and Mengmeng Wang",
note = "Publisher Copyright: {\textcopyright} 2021 SPIE; 2021 International Conference on Laser, Optics and Optoelectronic Technology, LOPET 2021 ; Conference date: 28-05-2021 Through 30-05-2021",
year = "2021",
doi = "10.1117/12.2602423",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Changsi Peng and Fengjie Cen",
booktitle = "International Conference on Laser, Optics and Optoelectronic Technology, LOPET 2021",
address = "United States",
}