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Multiplexing Nonvolatile Holograms in LiNbO3:Cu:Ce Crystals

Zhao Jian, Wang Jian-Gang, Liu Guo-Dong, He Qing-Sheng, Wu Min-Xian and Jin Guo-Fan

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A practical experimental system for two-centre 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-centre 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.


PACS

42.40.Ht Hologram recording and readout methods

42.70.Ln Holographic recording materials; optical storage media

Subjects

Optics, quantum optics and lasers

Dates

Issue 3 (March 2003)

Received 1 November 2002



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