标题：COPPER-ION POINT-DEFECTS IN THE PHOTOREFRACTIVE MATERIAL (KXNA1-X)0.4(SRYBA1-Y)0.8NB2O6
作者：JIANG, QZ; LU, XL; SONG, YY; SUN, DL; CHEN, HC
作者机构：[Quanzhong, J] Institute of Crystal Materials, Shandong University, Jinan 250100, China;[ Xinliang, L] Institute of Crystal Materials, Shandong Univer 更多[Quanzhong, J] Institute of Crystal Materials, Shandong University, Jinan 250100, China;[ Xinliang, L] Institute of Crystal Materials, Shandong University, Jinan 250100, China;[ Yongyuan, S] Institute of Crystal Materials, Shandong University, Jinan 250100, China;[ Daliang, S] Institute of Crystal Materials, Shandong University, Jinan 250100, China;[ Huanchu, C] Institute of Crystal Materials, Shandong University, Jinan 250100, China 收起
通讯作者：JIANG, QZ
通讯作者地址：[JIANG, QZ]SHANDONG UNIV,INST CRYSTAL MAT,JINAN 250100,PEOPLES R CHINA.
来源：PHYSICAL REVIEW B
出版年：1994
卷：50
期：6
页码：4185-4188
摘要：We show that Cu ions doped in (KxNa1-x)0.4(SrBa1-y)0.8Nb2O6 (KNSBN) form two energy levels in the band gap, which increase the effective charge-combination-center concentration N(eff). The two-wave coupling gain and the response speed of KNSBN crystals are increased while the photoconductivity and the effects of a dc field on the photorefractive properties are reduced. Self-pumped phase conjugation (SPPC) experiments have revealed that the effects of Cu ions on the photorefractive properties have a wavelength dependence. The SPPC response time at the e-1 level can be shortened to 200 ms.
