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2009 year, number 6

Calculation of the Reflection Coefficient of Metal-Dielectric Structures in Frustrated Total Internal Reflection

N. D. Goldina
Keywords: thin metal layer, total internal reflection, multilayer, biosensors
Pages: 99-104


Analytical formulas for calculating the reflection coefficient of a thin-film metal-dielectric structure at light incidence angles greater than the critical angle of total internal reflection were obtained using a conducting surface model for a thin absorbing layer. It is shown that an asymmetric interference pattern of the spectral dependence of the reflection coefficient has higher sensitivity to changes in the refractive index of the medium.