铌酸锂和钽酸锂的频率温度系数研究  

Research on Frequency-temperature Coefficient of Lithium Niobate and Lithium Tantalate Frequency Temperature Coefficient

作　　者：王立福[1] 王志斌[1,2] 赵冬娥[1,2] 陈友华[1] 张瑞[1] 

机构地区：[1]中北大学山西省光电信息与仪器工程技术研究中心,山西太原030051 [2]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《压电与声光》2013年第5期734-738,742,共6页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金仪器专项基金资助项目(61127015);国际科技合作项目基金资助项目(2012DFA10680);国际科技合作项目基金资助项目(2010***);山西省国际科技合作基金资助项目(2010081038)

摘　　要：铌酸锂(LN)和钽酸锂(LT)具有弹光及电光效应,可用于压电振子、压电换能器及压电驱动器,而这些器件受切角对频率温度系数影响大。该文主要研究了一级频率温度系数分别随绕x轴和z轴旋转切角θ1和θ3的变化,且画出了各个切型下,一级频率温度系数随切角变化的曲线图,从而确定了LT晶体的零温度切角和LN的近似零温度切角,对由LT和LN制成的晶体器件的切角选择具有指导意义。Due to the elastic-optic and electro-optical effect of lithium niobate and lithium tantalite, they can be applied to piezoelectric vibrator, piezoelectric transducer and piezoelectric drive. These devices are largely influenced by frequency-temperature coefficient changing with shear angle, based on which the variation of the primary frequen- cy-temperature coefficient with around x axis and z axis rotary respectively at cutting angle θ1 and θ3 are mainly stud- ied, and the change curve of level 1 frequency-temperature coefficient with the cutting angle are drawn out at each cut. The zero-temperature cutting angle of LT crystal and the approximate zero-temperature cutting angle of LN crystal is then determined, which is of importance in selecting the cutting angle of the crystal device by lithium nio- bate and lithium tantalate.

关 键 词：弹光晶体 频率温度系数 零温度切角 

分 类 号：O799[理学—晶体学]