Finite element analysis of three-dimensional laser-induced transient thermal grating in diamond/ZnSe system |
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Authors: | Cheng Ying Huang Qiao-Jian and Liu Xiao-Jun |
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Institution: | Key Laboratory of Modern Acoustics of Ministry of
Education, Nanjing University, Nanjing 210093, China |
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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. |
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Keywords: | thermal analysis transient
thermal grating diamond/ZnSe finite element method |
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