B Spherical Lens Model and Proof

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    Lens Model Proof
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And . . . ?
 
Unfortunately, the OP's post contains unpublished original research, so it is not appropriate for discussion at PF. Thread is closed now.
 
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I am currently undertaking a research internship where I am modelling the heating of silicon wafers with a 515 nm femtosecond laser. In order to increase the absorption of the laser into the oxide layer on top of the wafer it was suggested we use gold nanoparticles. I was tasked with modelling the optical properties of a 5nm gold nanoparticle, in particular the absorption cross section, using COMSOL Multiphysics. My model seems to be getting correct values for the absorption coefficient and...

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