Magneto-optical Kerr effect in bilayer structures
Abteilung Experimentelle Physik, Albert-Einstein Allee 11, 89069 Universität Ulm, Germany
Corresponding author: a Nicolas.Richard@physik.uni-ulm.de
Published online: 15 August 2000
This paper describes the magneto-optical effects and the reflectivity behaviors of bilayers based on magnetic and isotropic (MgF2)/anisotropic (TiO2) layers under the condition of total internal reflection. In the framework of Green's dyadic technique, we show accurately the optical properties of anisotropic layers deposited on a substrate. We present numerical simulations which account for the variation of angle of incidence at the HeNe laser wavelength. The Kerr rotation is found to increase significantly around the optical modes in total reflection. We also discuss the importance of anisotropic effects due to the crystallization of the dielectric material (TiO2) which occur in the reflectivity and Kerr rotation spectra.
PACS: 78.20.Ci – Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity) / 78.20.Ls – Magnetooptical effects / 78.66.-w – Optical properties of specific thin films, surfaces, and low-dimensional structures
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000