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; DOPED LITHIUM-NIOBATE; DATA-STORAGE; 2-STEP EXCITATION; CHARGE-TRANSPORT; OPTICAL STORAGE; CRYSTALS;

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

页码：240 / 250

页数：11

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