... relaxation times are accounted for. Scatterings by different mechanisms are treated individually, and the creation and/or destruction of phonons due to scattering is implicitly taken into account. The proposed method successfully predicts exact solutions of phonon transport across a gallium arsenide film...

... thermal diffusivity laser beam effects thermoreflectance gallium arsenide The thermal conductivity of the material can then be determined by matching the experimental results (i.e., the time evolution of the surface temperature) to the analytical (theoretical or numerical) solution obtained...