Material optimization for low scattering noise during nonvolatile holographic recording in doubly doped LiNbO3 crystals
Chinese Optics Letters, Vol. 2, Issue 11, pp. 630-633 (2004)
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Abstract
Scattering noises in four kinds of lithium niobate crystals with the same double doping system, which are LiNbO3:Fe:Mn, LiNbO3:Ce:Mn, LiNbO3:Ce:Cu, and LiNbO3:Fe:Cu, are observed and compared experimentally. The results show that nonvolatile holographic recording can effectively suppress scattering noise, which mainly depends on recombination coefficients of both the shallower centers and the deeper centers. The small recombination coefficients of the shallower centers and the large recombination coefficients of the deeper centers benefit the amplification of the signal gratings and the suppression of the noise gratings. In addition, the initial seed scattering also impacts the recorded scattering noise, and the little seed scattering results in low scattering noise. The theoretical simulations are performed for confirmation. Among the four kinds of doubly doped crystals, in LiNbO3:Ce:Cu the performances of nonvolatile recording are the best with low scattering noise and high diffraction efficiency.
© 2005 Chinese Optics Letters
OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(090.2900) Holography : Optical storage materials
(190.5330) Nonlinear optics : Photorefractive optics
Citation
De'an Liu, Liren Liu, Liyong Ren, Zhu Luan, and Yu Zhou, "Material optimization for low scattering noise during nonvolatile holographic recording in doubly doped LiNbO3 crystals," Chin. Opt. Lett. 2, 630-633 (2004)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-2-11-630
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