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Proceedings Paper

Self-enhancement effect and optimal switching scheme for high fixed diffraction efficiency in LiNbO3:Ce:Cu crystals
Author(s): Liyong Ren; Liren Liu; Dean Liu; Baoli Yao; Neimule MenKe; Zhiwei Ren; Yongfa Kong
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Paper Abstract

Self-enhancement effect and oscillatory characteristic of diffraction are observed during the holographic recording in LiNbO3:Ce:Cu crystal. Both phenomena are owing to the dynamic diffraction characteristics of photorefractive volume holograms or gratings. On the basis of the experimental results and the above concept, two methods, i.e., the self-enhancement effect and the optimal switching from the recording step to the fixing step, are correspondingly suggested for the production of persistent holograms with high fixed diffraction. By use of our recently presented time-space dynamic theory of two-center holographic recording, the experimental results are theoretically analyzed and numerically simulated. The simulations are in good agreement with the experimental results. It is shown that the self-enhancement in both steps of recording and fixing can obviously enhance the recorded and fixed hologram and thus the nonvolatile diffraction efficiency. And it is also indicated that switching after the first diffraction maximum leads theoretically to fixed diffraction of as much as 100% with a suitable switching time. This optimal switching provides a completely new method to obtain high persistent diffraction of the nonvolatile holographic storage in doubly doped LiNbO3 crystals.

Paper Details

Date Published: 7 February 2005
PDF: 5 pages
Proc. SPIE 5636, Holography, Diffractive Optics, and Applications II, (7 February 2005); doi: 10.1117/12.571888
Show Author Affiliations
Liyong Ren, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Liren Liu, Shanghai Institute of Optics and Fine Mechanics, CAS (China)
Dean Liu, Shanghai Institute of Optics and Fine Mechanics, CAS (China)
Baoli Yao, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Neimule MenKe, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Zhiwei Ren, Xi'an Institute of Optics and Precision Mechanics, CAS (China)
Yongfa Kong, Nankai Univ. (China)


Published in SPIE Proceedings Vol. 5636:
Holography, Diffractive Optics, and Applications II
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu; Byoungho Lee, Editor(s)

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