Photorefractive properties of potassium lithium niobate crystals

被引：7
|
作者：
Yang, CX [1 ]
Song, YT [1 ]
Zhang, DF [1 ]
Wang, XM [1 ]
Zhou, T [1 ]
Fan, FD [1 ]
Wu, X [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 1999年 / 74卷 / 10期
关键词：
D O I：
10.1063/1.123558
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the photorefractive properties of K3Li2-xNb5+xO15+2x crystals grown by the edge-defined, film-fed technique. The crystals with lithium/niobate ratio from 18.5/51.5 to 26/44 are grown and investigated by two-beam coupling technique. The crystal of composition K3Li1.783Nb5.687O16.61 exhibits an intensity coupling constant of 8 cm(-1) and an effective trap density of 1.8 x 10(22) m(-3). The photorefractive majority carriers are electrons in as-grown crystals. The grating recording time and erasure time are 530 and 260 ms, respectively, at an intensity of 2 W/cm(2). (C) 1999 American Institute of Physics. [S0003-6951(99)03610-4].
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收藏
页码：1385 / 1387
页数：3
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