Sep 06, 2008 · I am required to simulate laser drilling onto a material using comsol to obtain the heat transfer pattern. I have chosen silicon in the drop-down box I used the New>FEM>Heat Transfer>Conduction>Transient Analysis. I then created a rectangle with 3 sides thermally insulated and the top is having heat flux. Laser Heating of a Silicon Wafer A silicon wafer is heated up by a laser that moves radially in and out over time. In addition, the wafer itself is rotated on its stage.
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Frequently laser heating is modeled by solving the heat transfer equation under the assumption of a heat source profile applied to the surface. In that approach, you only solve the heat transfer equation, subject to the assumed thermal load. This keeps the model quite simple, and suitable when the material is opaque at the wavelength in question.