[en] The energy transmission in the evaporation process of a solid target by a laser pulse by means of the model of two temperatures which consists on two equations of heat conduction coupled by means of an electron-phonon coupling factor that means the energy transfer rate between the electrons and the net is described. This electron-phonon coupling factor is calculated for the particular case of the graphite, the obtaining of the analytic solutions in a space dimension of the system of non linear partial differential equations is shown considering two forms of the laser pulse (gaussian and delta function) and the electron temperature distributions of temperature and of the net are analyzed. (Author)