Finite element modeling of laser-induced three-dimensional Transient Thermal Grating in two-layered systemsJ.S. Wang, Y. Cheng, Q.J. Huang, X.J. Liu and S.Y. Zhang
Key Lab of Modern Acoustics, Nanjing University, Nanjing 210093, China
(Published online: 12 March 2008)
The three-dimensional (3D) temperature field of laser-induced transient thermal grating (TTG) for two-layered structures such as diamond/substrate is obtained by the finite element method (FEM). The numerical results indicate that the thickness of the diamond film has a significant influence on the temperature field. On the other hand, we further find that variation of the substrate significantly affects on the temperature distribution in the diamond film, which has been ascribed to the various thermal conductivities of the substrates.
© EDP Sciences, Springer-Verlag 2008