干涉法测量Cymbal换能器的等效压电常量  

Measuring the equivalent piezoelectric constant of Cymbal transducer using optical interference method

作　　者：黄慧明[1] 欧阳俊[1] 国世上[1] 

机构地区：[1]武汉大学物理科学与技术学院,湖北武汉430072

出　　处：《物理实验》2010年第11期5-7,11,共4页Physics Experimentation

基　　金：武汉大学国家物理实验示范中心创新实验项目

摘　　要：在光学平板上用分立光学元件构建了迈克耳孙型分光束干涉仪,利用优化工艺制备的Cymbal换能器件作为核心单元,利用其在电场下的位移放大作用驱动平面反射镜,引起干涉图样的变化,实现了微位移及Cymbal换能器件等效压电常量的测定,并进行了非定域干涉图样变化的动态演示.Amplitude-splitting double-beam interferometer of Michelson type is constructed with discrete optical component on optical table.As a core unit of this interferometer,a Cymbal transducer with optimized technological parameter is used to drive one of the reflecting plane mirrors,leading to the variation of the optical path difference and the interference pattern,thus the measurement of micro-displacement and the equivalent piezoelectric constant of Cymbal transducer are completed.It can also be used to demonstrate the dynamic variation of nonlocalized fringes with an AC voltage signal.

关 键 词：分光束干涉 CYMBAL换能器 压电常量 非定域干涉 

分 类 号：O436.1[机械工程—光学工程]