Spectral dependence of the diffraction efficiency of light-induced gratings in YAlO3:Mn crystals

Abstract The results of measurements of spectral dependence of diffraction efficiency of light-induced holographic gratings in YAlO 3 :Mn(0.5%) crystal are reported. The experimental data are interpreted as an effect of interaction of both refractive index changes and light-induced absorption associated with optical transition within photo-induced Mn 5+ ions and intrinsic defect centers. Nature of the intrinsic traps involved in the process is discussed.