Two-fluid plasma model for ultrashort laser-induced electron-hole nanoplasmas

Abstract

We present a two-fluid plasma model to describe localized interaction, at submicrometer scale, of highly focused ultrashort laser pulses within dielectrics and semiconductors. This model includes transport of the electron-hole plasma, electron-hole scattering, photoionization, impact ionization, and interactions between charge carriers and phonons. We start with a plasma kinetic description, and we consistently derive the two-fluid plasma model equations. Our numerical results highlight that transport of the electron-hole plasma can strongly affect the plasma density profile in the case of extremely localized interaction.