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Forum: Processes Involving Optical Photons
Re: Question mylar and surfaces (stefania stucci)
Date: 30 Mar, 2009
From: Gumplinger Peter <Gumplinger Peter>

What kind of surface do you specify between your crystals and the mylar? You should be specifying dielectric_metal. There is no need to specify a surface between the mylar and the world. The (aluminized) mylar is a metal. A first option would be dielectric_metal, glisur, polished.

More likely your crystals are wrapped by mylar. In such a case, a more realistic model is to assume a small air gap between it and the crystal. This situation can be modeled by the UNIFIED model with (dielectric_dielectric) and (ground/polished) 'backpainted' option. If you choose ground the back-paint (in your case mylar reflector) is assumed to be a Lambertian reflector.

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