KnbO_3：Fe二波耦合温度效应研究  

KNbO3:Fe TEMPERATURE DEPENDENCE OF TWO-WAVE COUPLING

作　　者：王威礼[1] 王德煌[1] 郑英俊[1] 

机构地区：[1]北京大学物理系

出　　处：《红外与毫米波学报》1994年第3期231-234,共4页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金

摘　　要：报道了ＫＮｂＯ３：Ｆｅ在５１４．５和６３２．８ｎｍ二波耦合增益系数随温度（２９０～３７０Ｋ）变化的实验结果，分析研究了温度对暗电导、电光系数和扩散场的影响，通过对电光系数ｒ５１为主的实验和理论曲线的拟合，得到了室温（３００Ｋ）暗电导和光电导之比Ｂ＝σｄ／σｐ及其它参数值．The experimental results of the temperature (290～370K) dependence of two-wave coupling in KNbO3:Fe at 514.5 and 632.8nm are presented. The effects of temperature variation on the dark conductivity3 electro-optical coefficient and diffusion field are analyzed. By comparing experiments and theoretical curves dominated by electro-optical coefficient r51, the ratio B=σd/σp of dark conductivity to photoconductivity at room temperature 300K and other parameters are obtained.

关 键 词：铌酸钾 光折变 二波耦合 温度相关 

分 类 号：TN204[电子电信—物理电子学]