Comparison of two-color holography between congruent and near-stoichiometric LiNbO3:Fe at low intensities

被引：0
|
作者：
Shen, Y [1 ]
Zhang, GQ [1 ]
Fu, B [1 ]
Xu, QJ [1 ]
Xu, JJ [1 ]
机构：
[1] Nankai Univ, Coll Phys Sci, Photon Ctr, Tianjin 300071, Peoples R China
来源：
NONLINEAR OPTICAL PHENOMENA AND APPLICATIONS | 2005年 / 5646卷
关键词：
nonvolatile; holographic recording; lithium niobate; two-center; sensitivity; space-charge field; small; polarons; photorefractive; near; stoichiometric; congruent;
D O I：
10.1117/12.570348
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have studied theoretically the steady-state nonvolatile two-step, two-color holographic recording performance for both the congruent and the near-stoichiometric LiNbO3:Fe based on the two-center model (the deep-trap and the shallow-trap centers are Fe2+/Fe3+ and Nb-Li(4+)/Nb-Li(5+), respectively). We compare the amplitudes of the total space-charge fields and the recording sensitivities between the congruent and the near-stoichiometric LiNbO3:Fe. The results show that the amplitudes of the total space-charge fields in near-stoichiometric LiNbO3:Fe are larger than that of congruent ones by at least one order of magnitude, while the recording sensitivities of the near-stoichiometric LiNbO3:Fe are confirmed theoretically to be around two-order in magnitude higher than that of the congruent ones with the same experimental conditions at low intensity region.
引用
收藏
页码：240 / 250
页数：11
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