Green-induced infrared absorption in MgO doped LiNbO3

被引：207

作者：

Furukawa, Y

Kitamura, K

Alexandrovski, A

Route, RK

Fejer, MM

Foulon, G

机构：

[1] OXIDE Corp, Yamanashi 4080044, Japan

[2] Natl Inst Res Inorgan Mat, Tsukuba, Ibaraki 3050044, Japan

[3] Stanford Univ, Edward L Ginzton Lab, Stanford, CA 94305 USA

[4] Crystal Technol Inc, Palo Alto, CA 94303 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 14期

关键词：

D O I：

10.1063/1.1359137

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Green-induced infrared absorption (GRIIRA) was investigated by a photothermal technique for undoped and Mg-doped LiNbO3 crystals that have different Li/Nb ratios. Threshold effect on GRIIRA was found, threshold MgO concentrations being the same for GRIIRA and photorefraction. We suggest that GRIIRA is associated with the formation of the small polaron that is located on Nb antisite defect. The remarkable decrease of GRIIRA in Mg:LiNbO3 can then be attributed to the elimination of this intrinsic defect, Nb in Li, following the incorporation of Mg on Li sites. For nonlinear optical applications, LiNbO3 doped with MgO at concentrations over threshold has a combined advantage of having almost no GRIIRA and photorefraction. (C) 2001 American Institute of Physics.

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页码：1970 / 1972

页数：3

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