Piezo‐ and thermo‐optic behavior of LiTaO3
Piezo‐ and thermo‐optic behavior of LiTaO3
复制标题
LiTaO3 的压电和热光行为
DOI：
10.1063/1.328782
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
K. Vedam
中科院分区：
文献类型：
--
作者：
C. Cordero;K. Vedam
通过干涉法测量了铁电 LiTaO3 在静水压力为 14 kbars 时的寻常折射率和非寻常折射率的变化，测量了光谱可见光区域的三个波长。发现这两个指数均随压力线性增加。已经评估了偏振诱导对观察到的压电光学行为的贡献。应变极化常数 L 为正且很大，并且随着波长的缩短而增加。计算发现纯温度对该指数的贡献很大。同晶 LiNbO3 的相应结果根据 Ta-O 和 Nb-O 键之间的共价差异进行了讨论。
The variation of the ordinary and extraordinary refractive indices of ferroelectric LiTaO3 with hydrostatic pressure to 14 kbars has been measured for three wavelengths in the visible region of the spectrum by an interferometric method. Both the indices are found to increase linearly with pressure. The polarization induced contribution to the observed piezo‐optic behavior has been evaluated. The strain polarizability constant L is positive and large, and increases for shorter wavelengths. The pure temperature contribution to the index is calculated and found to be large. Corresponding results for isomorphic LiNbO3 are discussed in terms of the difference in covalency between the Ta‐O and Nb‐O bonds.