Multiplexing Nonvolatile Holograms in LiNbO3:Cu:Ce Crystals
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Abstract
A practical experimental system for two-center recording by angular multiplexing and 90°geometry is designed with red and blue light. The erasure mechanism of lithium niobate crystals doubly doped with copper and cerium for two-center recording is discussed and a modified decremental recording schedule for angular multiplexing is proposed subsequently. Finally, 50 nonvolatile holograms with almost the same diffraction efficiency are recorded.
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