Experimental study on multiplex holographic storage in photorefractive crystal

In this paper, firstly a recording method of uniform diffraction efficiency for multiplex hologram record in the same volume in photorefractive crystal was discussed.That was schedule in decreasing time by degree.Then, under this exposal schedule, we stored and reconstructed 12 letters by using Zn:Fe:LiNbO₃ and Fe:LiNbO₃ crystal as storage medium through angular multiplexing when multiplexing angle interval was △Θ(△Θ=0.094°).The result showed that the reconstructed images were very satisfactory.