First-principle electron dynamics simulation for optical breakdown of dielectrics under the intense laser

Otobe, Tomohito

The optical breakdown is the most important process to control and manipulate the dielectrics by the intense laser field. However, the first-principle simulation for this process has not been studied. In this study, we employ the time-dependent density functional theory (TD-DFT) to describe the electron dynamics of many electron system. Our computational results shows that the electron excitation occurs around the electric bond and the above threshold photo-absorption process which is similar to the atom or molecular case.