Material optimization of doubly doped LiNbO3 crystals for high-diffraction efficiency and low-scattering noise in nonvolatile holographic storage

De'an Liu; Liren Liu; Liyong Ren; Zhu Luan; Jifeng Zu

doi:10.1117/12.503563

21 October 2003 Material optimization of doubly doped LiNbO₃ crystals for high-diffraction efficiency and low-scattering noise in nonvolatile holographic storage

De'an Liu, Liren Liu, Liyong Ren, Zhu Luan, Jifeng Zu

Author Affiliations +

Proceedings Volume 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX; (2003) https://doi.org/10.1117/12.503563
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Scattering noise in four kinds of lithium niobate crystals of the same doubly doping system (they are LiNbO₃:Fe:Mn, LiNbO₃:Ce:Mn, LiNbO₃:Ce:Cu and LiNbO₃:Fe:Cu) is observed during nonvolatile holographic recording. The results show that nonvolatile holographic recording can effectively suppress scattering noise and this kind of suppression effect is decided by the recombination coefficients of the dopants in the shallower and the deeper centers, respectively. It is concluded that small recombination coefficients of the shallower centers and large recombination coefficients of the deeper centers benefit the amplification of the signal grating and the suppression of the noise grating. In addition, the initial seed scattering noise also impacts the finally suppressed scattering noise and little initial seed scattering leads to low scattering noise after recording. In a conclusion, the performances of LiNbO₃:Ce:Cu is the best with high diffraction efficiency and low scattering noise. The theoretical simulations are performed for validation. It provides a fundamental method to the problem of scattering noise intrinsic into the nonvolatile holographic recording.

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De'an Liu, Liren Liu, Liyong Ren, Zhu Luan, and Jifeng Zu "Material optimization of doubly doped LiNbO₃ crystals for high-diffraction efficiency and low-scattering noise in nonvolatile holographic storage", Proc. SPIE 5206, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications IX, (21 October 2003); https://doi.org/10.1117/12.503563

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KEYWORDS

Scattering

Crystals

Laser scattering

Holography

Interference (communication)

Diffraction gratings

Laser crystals

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