压电诱导型声光调制器中的电光效应  

ELECTRO-OPTIC EFFECT IN PESO ACOUSTO-OPTIC MODULATOR

作　　者：邰仁忠[1] 吕福云[1] 袁树忠[1] 关信安[1] 李兵 

机构地区：[1]南开大学现代光学研究所,天津300071

出　　处：《物理学报》1992年第6期1012-1018,共7页Acta Physica Sinica

摘　　要：本文通过解压电效应的基本方程,应用一维近似理论,结合边界条件,得出压电共振晶体中电场是不均匀的,它将导致“电光栅”的产生。“电光栅”与“声光栅”可以相互耦合,产生“高次光栅”。压电诱导声光(PESD)调制器中的一次电光效应更有助于对入射光束的衍射和调制。实验结果证实本文结论。With the theory of one-dimensional approximation, combined with the boundary conditions, an inhomogeneous electric field is derived from the foundamental equations of pieozoelec-tric effect. This inhomogeneous electric field will lead to generation of 'electric grating', and 'high-order grating' can also appear owing to coupling between 'electric grating' and 'acoustic grating'. Linear electro-optic effect in PESO modulator is helpful to the diffraction and modulation of the incident light beam. The experimental results verify our conclusions.

关 键 词：声光调制器 电光效应 压电诱导型 

分 类 号：TN65[电子电信—电路与系统]