激光双光栅法测微小位移中光拍信号波形改进  

Improvement on the shape of light-beat in measurement of tiny displacement by double-grating using laser

作　　者：黄壮雄[1] 潘永华[1] 宋伟[1] 周进[1] 

机构地区：[1]南京大学物理系,江苏南京210093

出　　处：《大学物理》2004年第4期59-62,共4页College Physics

摘　　要：通过理论分析和计算机模拟方法,对激光双光栅法测微小位移实验中出现的不规则光拍信号波形,即"毛刺"现象进行讨论,提出了改进双光栅微振动实验的方法,并获得了好的结果.By theoretical analysis and computer simulation, the 'burr' phenomenon--irregular shape of light?-?beat signals in the experimental measurement of tiny displacement by double?-?grating using Laser is studied. An effective improvement of the experiment is put forward as well.

关 键 词：多普勒效应 微振动 光栅 

分 类 号：O435[机械工程—光学工程]