双掺杂LiNbO_3晶体光折变效应研究  

Properties of Photorefractive Effect in Double-doped LiNbO_3 Crystals

作　　者：许心光[1] 许贵宝[1] 王正平[1] 杨旭东[1] 邵宗书[1] 徐悟生[2] 徐玉恒[2] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100 [2]哈尔滨工业大学应用化学系,哈尔滨150001

出　　处：《压电与声光》2004年第5期386-389,共4页Piezoelectrics & Acoustooptics

摘　　要：研究了系列不同掺杂、不同掺杂浓度、单掺杂和双掺杂以及不同后处理态 (生长态、还原态和氧化态 )铌酸锂晶体的透过率光谱和光折变二波耦合效应。实验结果表明 ,高掺杂铌酸锂样品的透过率光谱范围较窄 ;双掺杂样品比单掺铁样品的抗光折变效应增强 ,光折变效应降低。氧化态样品具有较大的透过率光谱范围 ;A series of LiNbO_3 crystals were studied including different dopants, single-doped or double-doped, different concentrations of dopants, and different as-grown samples (or reduced or oxidized). Optical transmission spectra and the gain of photorefractive effect two-wave mixing were investigated with a series of LiNbO_3 samples. The experimental results show that the optical transmission spectra range and two-wave mixing gains are smaller in the high doped LiNbO_3 crystals. The properties of photorefractive effect in double-doped LiNbO_3 samples are not superior to those of doped Fe samples. Photorefractive effect resistant is shown in double-doped samples. The larger optical transmission spectra range can be obtained in the oxidized samples. And the greater gain of photorefractive effect two-wave mixing can be obtained in reduced samples.

关 键 词：铌酸锂晶体 双掺杂 光折变效应 透过率光谱 

分 类 号：O374[理学—流体力学]