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Proceedings Paper

Optimal switching time for recording and fixing phases during nonvolatile holographic storage in doubly doped LiNbO3 crystals
Author(s): Liren Liu; Liyong Ren; Dean Liu; Zhu Luan; Lingyu Wan
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Paper Abstract

In this paper, an oscillatory characteristic of diffraction is observed in a weakly oxidized LiNbO3:Ce:Cu crystal during the holographic recording. Experiment indicates that, after the first diffraction maximum, there exists an optimal switching time from the recording step to the fixing step which can produce a high diffraction of fixed hologram. High diffraction efficiency of 70% is observed in LiNbO3:Ce:Cu crystal. For theoretical simulation, the time-space dynamic evolution of the nonvolatile holographic recording in doubly doped LiNbO3 crystals by jointly solving the two-center material equations and the coupled-wave equations is performed. The results show that the optimal switching will lead theoretically the fixed diffraction up to 100 % with a suitable switching time. This method provides us a new idea to obtain high persistent diffraction efficiency. The relationship between the optimal switching and the crystal thickness is studied.

Paper Details

Date Published: 22 October 2004
PDF: 7 pages
Proc. SPIE 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X, (22 October 2004); doi: 10.1117/12.558842
Show Author Affiliations
Liren Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Liyong Ren, Shanghai Institute of Optics and Fine Mechanics (China)
Dean Liu, Shanghai Institute of Optics and Fine Mechanics (China)
Zhu Luan, Shanghai Institute of Optics and Fine Mechanics (China)
Lingyu Wan, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 5560:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X
Francis T. S. Yu; Ruyan Guo; Shizhuo Yin, Editor(s)

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