Learning Forum

[Guilin Sun]

You may consider the following two issues:

1: when you say high reflectivity, what is the condition? how thick is the polymer? is it on SiO2? 

2: did you use lossy material data, eg, real(n)+i*imag(n)? absorption happens only when the material has loss, eg the imaginary part of the refractive index is non-zero. If it is pure dielectric, there is no absorption.

Have you measured the refractive index? from my experience, the imaginary part is difficult to measure, if not using polarimetry. Please check the actual refractive index you used, and make sure the thickness is porperly set to compare with experiment.