Room-temperature intense emission at 1534 nm in Er-doped Cd3Al2Si3O12 glass

In this work, a promising solid-state laser material, Er-doped cadmium aluminum silicate glass, has been synthesized by solid-state reaction. Very intense emission at 1534 nm, corresponding to the 4I13/2→4I15/2 transition of Er3+ ions, was observed upon both 488 nm Ar+ laser and 632.8 nm He–Ne laser excitations at room temperature. Possible cross-relaxation processes in the glass are discussed.