压电诱导型声光调制器中的电光效应

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。 关键词：

ELECTRO-OPTIC EFFECT IN PESO ACOUSTO-OPTIC MODULATOR

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.