Abstract This paper uses finite element method to obtain the three-dimensional temperature field of laser-induced transient thermal grating (TTG) for two-layered structure of diamond film on ZnSe substrate. The numerical results indicate that unique two-times heating process is gradually experienced in the area between two adjacent grating stripes. However, there is a little change for the temperature field along the depth direction for the diamond film due to its great thermal conductivity. It further finds that the thickness of the diamond film has a significant influence on the temperature field in diamond/ZnSe system. The results are useful for the application of laser-induced TTG technique in film/substrate system.
Received: 11 January 2008
Revised: 28 April 2008
Accepted manuscript online:
PACS:
66.70.-f
(Nonelectronic thermal conduction and heat-pulse propagation in solids;thermal waves)
Fund: Project
supported by the National Natural Science Foundation of China (Grant
Nos 10374041 and 10574071).
Cite this article:
Cheng Ying (程 营), Huang Qiao-Jian (黄巧建), Liu Xiao-Jun (刘晓峻) Finite element analysis of three-dimensional laser-induced transient thermal grating in diamond/ZnSe system 2008 Chin. Phys. B 17 4273
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