Magneto-optical Kerr effect in bilayer structures

This paper describes the magneto-optical effects and the reflectivity behav iors of bilayers based on magnetic and isotropic (MgF2)/anisotropic (TiO2) layers under the condition of total internal reflection. In the framework o f Green's dyadic technique, we show accurately the optical properties of an isotropic layers deposited on a substrate. We present numerical simulations which account for the variation of angle of incidence at the HeNe laser wa velength. The Kerr rotation is found to increase significantly around the o ptical modes in total reflection. We also discuss the importance of anisotr opic effects due to the crystallization of the dielectric material (TiO2) w hich occur in the reflectivity and Kerr rotation spectra.