Abstract
Laser-induced temperature rise in anisotropic substrates has been investigated by solving the heat equation in anisotropic media. A model was derived to calculate the laser-induced temperature in anisotropic substrates. It is found that the heat equation in anisotropic media can be simplified to a heat equation in isotropic media by coordinate transformation. The anisotropy of the media can then be reflected by heat source transformation. The results reveal that the laser-induced temperature rise can be significantly affected by the anisotropy of the substrate. The thermal conductivity change along the Z direction (downward into the substrate) will affect the temperature rise more significantly than that along the X and Y directions (parallel to the substrate surface). The anisotropy in thermal conductivity not only affects the peak temperature rise, but also affects the shape of the temperature profile.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4893-4900 |
| Number of pages | 8 |
| Journal | Journal of Applied Physics |
| Volume | 72 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1992 |
| Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)