Optimal switching time for recording and fixing phases during nonvolatile holographic storage in doubly doped LiNbO<sub>3</sub> crystals

Liren Liu; Liyong Ren; Dean Liu; Zhu Luan; Lingyu Wan

doi:10.1117/12.558842

22 October 2004 Optimal switching time for recording and fixing phases during nonvolatile holographic storage in doubly doped LiNbO₃ crystals

Liren Liu, Liyong Ren, Dean Liu, Zhu Luan, Lingyu Wan

Author Affiliations +

Proceedings Volume 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X; (2004) https://doi.org/10.1117/12.558842
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

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.

Citation Download Citation

Liren Liu, Liyong Ren, Dean Liu, Zhu Luan, and Lingyu Wan "Optimal switching time for recording and fixing phases during nonvolatile holographic storage in doubly doped LiNbO₃ crystals", Proc. SPIE 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X, (22 October 2004); https://doi.org/10.1117/12.558842

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