Hi, i’m new to Zemax and i’m finding some problem for my application. 

I have four rectangular volumes: a layer of aor, a layer of f.silica and a layer of silicon and another layer of air one over the other.

I generate photons with a specific wavelength in the fused silica layer with a given angle towords the silicon layer. I want to study the absorption of photons in silicon and the fraction of reflected photons.

However when i trace a given ray, it is propagated in all the system and i don’t see any absorption. (It just moves between the f. silica and silicon layer back and forth). 

The question is : is the photoelectric absorption taken into account automatically be zemax or not? And why do I see infinite reflections?

Another important thing is that silicon is not modeled in my range of interest (400-700 nm) (INFRARED catalogue) and i copied the catalogue in order to extend the refractive index parametrization to my range of interest. Is there another way to do this? And could this influence the fact i don’t see absorption?

Sorry for all these questions, thack you in advance.