Discussion Forum

Hi everyone, I am new COMSOL user, I want to analyze the reflection and refraction of silicon material with different light incidence angle. Absorption of different wavelength light also wants to evaluate. The geometry is defined by a block with a layer, the upper layer assigns as air and below layer as silicon. In geometrical optic, I have taken the 'wall' subnode with selection specular reflection from the side of the block. One wall condition at upper boundary and another one is at lower boundary also applied to freeze rays. Tell me that I am right or wrong. I have used a 'released from grid' subnode as a light source. In result, I have created a 1D plot to find reflection and refraction with respect to the following expression: (gop.relg1.I0-gop.I) /gop.relg1.I0 for reflection and gop.I / gop. relg1.I0 for transmission in the y-axis and gop.lambda0 in x-axis but the expected result has not found. The pictures of model is attached below. Please suggest me, your valuable suggestion is appreciable.