文档介绍：
高质量 CLBO 晶体的生长与阻抗性能研究#
王珠峰,王增梅,郭新立**
(东南大学材料科学与工程学院,南京 211189)
5
10
15
摘要:本文采用顶部籽晶法生长出高质量的 CLBO 单晶,晶体在 180-2800nm 区间内具有优
异的透光性能。研究了不同方向晶面的阻抗随频率的变化情况以及不同方向晶面的谐振频
率和机电耦合系数的变化情况。结果表明阻抗、压电性能与晶体结构之间具有一定的联
系,另外 CLBO 单晶的(001)面具有最优异的压电性能,在高温下,机电耦合系数达到了
17%。
关键词:CLBO;晶体生长;阻抗;机电耦合系数
中图分类号:O738
Growth and impedance spectroscopy study of high quality
CLBO crystals
WANG Zhufeng, WANG Zengmei, GUO Xinli
(School of Materials Science and Engineering, Southeast University, Nanjing 211189)
Abstract:
In this paper, high quality CLBO crystals were grown by top-Seeded solution growth
(TSSG) method. It shows very high optical transmittance in the wavelength of 180-2800nm. The
20
25
30
35
40
temperature and frequency dependence of impedance spectroscopy for different cuts CLBO
crystal were investigated, also temperature characteristics of the resonance frequency and
electromechanical coupling were studied. The anisotropy of electric properties has strong
relationship with structure of different crystal plane. The result show that (001)-plane of CLBO
crystal has the highest electromechanical coupling factor of about 17% at elevated temperature,
these make CLBO crystal excellent candidate for electrical application at elevated temperature.
Key words: CLBO; Crystal growth; Impedance spectroscopy; Electromechanical coupling factor
0 引言
非线性光学晶体因为其具有优异的电光、非线性光学、压电以及光折