On “the Anomalous Effect” of the Magnetic Circular Polarization of the F Center Luminescence

Abstract

When the pumping light is modulated between right and left circular polarization, the magnetic circular polarization of F center luminescence observed after passing through a linear polarizer has been called “the anomalous effect”. We measured this effect for the F center in KI as a function of the magnetic field H and the photon energy. These experimental data are explained by deriving a form which includes the parameter (ε_I) for the unbalancing of circular polarization in pumping light and the spin-lattice relaxation rate of the relaxed excited state (T₁^*)⁻¹. The H-dependence of (T₁^*)⁻¹ is presented.