Electro-optic, piezoelectric and dielectric properties of langasite (La3Ga5SiO14), langanite (La3Ga5.5Nb0.5O14) and langataite (La3Ga5.5Ta0.5O14)

被引：0

作者：

Stade, J ^{[1
]}

Bohaty, L

Hengst, M

Heimann, RB

机构：

[1] Univ Cologne, Inst Crystallog, D-50674 Cologne, Germany

[2] Freiberg Univ Min & Technol, Dept Mineral, D-09596 Freiberg, Germany

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2003年 / 37卷 / 10期

关键词：

langasite; langanite; langataite; electro-optic properties; dielectric constants; refractive indices; piezoelectric coefficients;

D O I：

10.1002/1521-4079(200210)37:10<1113::AID-CRAT1113>3.0.CO;2-E

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Refractive indices were determined of single crystals of La3Ga5SiO14 (langasite, LGS), La3Ga5.5Nb0.5O14 (langanite, LGN) and La3Ga5.5Ta0.5O14 (langataite, LGT) in the wavelength region between 0.36 mum and 2.33 mum. While phase-matched optical second harmonic generation is not possible in LGS it occurs in the isotypic compounds LGN and LGT. Temperature-dependent examination of the dielectric properties of LGS up to 600degreesC showed anomalous behaviour. For all three substances the electro-optic [r(ijk)(sigma)] ("unclamped") and the piezoelectric [d.,] tensors were determined at room temperature. In addition, the temperature-dependence of these properties was studied for LGS between -200degreesC and +200degreesC by a Jamin interferometer in combination with a modified Senarmont compensator.

引用

页码：1113 / 1120

页数：8

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