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Calculated reflectivity for various thicknesses of PVA (nS = 1.50) on 50-nm-thick silver (εm = −14.06 + 0.45i) on 0.7-mm quartz (nQ = 1.46) with light incident through a medium with np = 1.52. Bottom panel shows the five-phase system used for reflectivity calculation with TF Calc.39
