Few studies in literature have try to quantitatively compare the 2T model with experimental data at very short time scale and study the dependency and importance of model’s parameters. We have developed a new numerical model and fitting algorithm which combined the 2T model, thermal conduction and 3D FEM EM code to link the spatial distribution of temperature to the optical reflectivity of the sample. Using a state-of-the-art pump-probe setup allowing the acquisition of the full spectro-temporal optical response of the sample, we have compared measurements on thin gold films and array of nanostructures with our model.
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