We have performed two-color hologram multiplexing in stoichiometric LiNbO3:Tb,Fe, which exhibits a photochromic effect. One hundred angle-multiplexed holograms of nearly equivalent strength have been recorded from the colored state by use of 850 nm recording beams and a 436 nm gating light. The stored holograms were highly resistant against erasure during continuous readout. It was estimated that 80 million readouts with a bit rate of 1 Gbit/s is possible before the diffracted signal intensity decays to half of its initial value. (C) 2002 American Institute of Physics. References: 13
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