Abstract
Summary In this paper we report experimental studies of nonvolatilephotorefractive holographic recording in doping In(3mol%), which exceed the so-called threshold, in Ce:Cu:LiNbO3 crystals. The In:Ce:Cu:LiNbO3 crystal was grown by the Czochralski method and oxidized. The OH− absorption band of In:Ce:Cu:LiNbO3 crystal is 3507cm−1. The nonvolatile holographic recording in In:Ce:Cu:LiNbO3crystal is realized by two-photon fixed method. From the experiment, we found that the recording time of In:Ce:Cu:LiNbO3 crystal is lower than that of Ce:Cu:LiNbO3 crystal and there are a little lose of nonvolatile diffraction efficiencies between In:Ce:Cu:LiNbO3 and Ce:Cu:LiNbO3 crystals. In this paper, the mechanism of OH− absorption band shifting and two-photon fixed was discussed, too.
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