Figure 6:

Thermal dynamics in Na-based thin films. (a) Dependence of the electron temperature T _e over the longitudinal position within the thin film z and the excitation time t for fixed pump peak intensity I ₀ = 100 GW/cm² and pulse duration τ = 0.1 ps. (b) Temporal evolution of T _e for fixed pump peak intensity I ₀ = 100 GW/cm², longitudinal position z = 0 and several pulse durations τ = 0.1, 0.5, 1 ps. (c) Temporal evolution of T _e for several pump peaks intensities I ₀ = 0.1, 0.5, 1 TW/cm² and fixed pulse duration τ = 0.1 ps and longitudinal position z = 0. All plots are obtained at TEM normal incidence and for fixed pump carrier wavelength λ = 690 nm.