Optimized factor of merit of the magneto-optical Kerr effect of ferromagnetic thin films

This paper deals with the optimization of the factor of merit of the magnet o-optical Kerr effect of a resonant multilayer cavity including a ferromagn etic film. This optimization is of interest in the context of optical stora ge technology. Using numerical simulations based on the Green's dyadic tech nique, we discuss a route to obtain magneto-optical multilayers with a vani shing ellipticity and factors of merit (with respect to the bulk magnetic m aterial) larger than 3 on a broad range of wavelengths, significantly highe r than the actual state of the art.