Erasure characteristics of off-Bragg readout during nonvolatile holographic storage in doubly doped LiNbO<sub>3</sub> crystals

Dean Liu; Liren Liu; Qianmin Dong; Zhu Luan; Yu Zhou

doi:10.1117/12.558847

22 October 2004 Erasure characteristics of off-Bragg readout during nonvolatile holographic storage in doubly doped LiNbO₃ crystals

Dean Liu, Liren Liu, Qianmin Dong, Zhu Luan, Yu Zhou

Author Affiliations +

Proceedings Volume 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X; (2004) https://doi.org/10.1117/12.558847
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

In this paper the erasure characteristics with different readout conditions, especially off-Bragg readout, during nonvolatile holographic storage in doubly doped LiNbO₃ crystals are investigated. The results show that off-Bragg readout by red beam can achieve modest diffraction efficiency while self-enhancement readout gets highest and self-depletion readout has lest diffraction efficiency. During erasing phase, the fast erasure case is that off-Bragg red beam and ultraviolet light are simultaneously used for illumination. It is indicated that the greatest effect on the erasure of the former recorded gratings during multiplexing holograms is the recording of the others gratings, and new recording schedule during multiplexing technique should be considered according to off-Bragg erasing. The experimental results are well verified by theoretical simulation basing on two-center material equations and two beam coupling equations.

Citation Download Citation

Dean Liu, Liren Liu, Qianmin Dong, Zhu Luan, and Yu Zhou "Erasure characteristics of off-Bragg readout 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/10.1117/12.558847

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