Abstract

The precise description electron-hole distribution and their quasi-temperatures are important to understand the initial stage of the laser processing. The multi-photon absorption and tunnel excitation processes are the crucial electron excitation processes in the semiconductors under the femtosecond laser pulse. Since these processes are non-linear and/or non-perturbative, we have to treat the dynamics of the electron and electromagnetic fields simultaneously. Recently, we have developed the first-principle numerical program SALMON, which combining time-dependent density functional theory (TDDFT) and the Maxwell’s equation [1]. We can simulate the electron excitation process around the surface in the first-principle calculation.

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