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Question Optical boundary process and absorption at boundary 

Forum: Processes Involving Optical Photons
Date: 13 Aug, 2008
From: Kay Ulbrich <Kay Ulbrich>


For the transport of optical photons in a material I use the optical boundary process, which is based on the difference of refraction indices at volume boundaries, i.e., Fresnel type refraction. More specific, the transport is achieved by exploiting the angular limit for total reflection. No G4OpticalSurface is needed for this.

Now I would like to add one feature: additional to this process, I want the photon to be absorbed with a certain probability at the boundary surface, where the Fresnel process takes place (this is due to phenomenologically introduced surface imperfections). Is this possible with some special G4OpticalSurface? If I got it right, as soon, as I introduce such a surface, the "normal" Fresnel type boundary process is not working anymore and all optical properties have to be implemented via the G4OpticalSurface.

So my question is: are there some standard optical properties or techniques implemented, or would the only solution be to go to the stepping level? In that case, would every single step have to be tested or is there a special class offering a virtual function, which is called when a boundary is crossed?

Thanks in advance for advice!

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1 Feedback: Re: Optical boundary process and absorption at boundary   (Gumplinger Peter - 14 Aug, 2008)
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