Orthogonal decomposition of elliptically polarized light through resonators composed of magnetic film

In order to control and analyze light polarization, we design a magnetic resonator and study its transmission properties by the 4×4 transfer matrix method. Through the magnetic resonator an incidence of elliptically polarized light results in two resonance wavelengths. At the two resonance wavelengths, the elliptically polarized light is orthogonally decomposed into left-handed circular polarization and right-handed circular polarization. One of the two circular polarizations is transmitted and the other is reflected.

► Magnetic film is sandwiched between two identical metal films.
► There are two resonant wavelengths for the incident elliptically polarized light.
► The incident light is orthogonally decomposed into two circular polarizations at the two wavelengths.