Study on two-color holographic storage in doubly doped Fe:Ni:LiNbO 3 crystals

Holographic recording experiments of doubly-doped LiNbO 3 :Fe:Ni crystals were conducted by three kinds of different two-color recording schemes. The results show that the saturation diffraction efficiency, the fixing diffraction efficiency, and the recording sensitivity of oxidized LiNbO 3 :Fe:Ni crystal are higher than those of other reported doubly-doped LiNbO 3 crystals. Based on the doped energy-band diagram, the effect of microcosmic optical parameter of the deep trap center on holographic recording properties of doubly-doped LiNbO 3 is analyzed theoretically. LiNbO 3 :Fe:Ni has the potential of being a new highly efficient nonvolatile holographic recording material.