利用强度周期性变化的光信号测量光速与介质的折射率  

Using intensity periodic variation light signal survey speed of light and medium refractive index

作　　者：俞嘉隆[1] 黄学东[1] 乔卫平[1] 夏樟根[1] 李向亭[1] 

机构地区：[1]上海交通大学物理系,上海200240

出　　处：《大学物理》2007年第3期41-43,共3页College Physics

摘　　要：介绍了一种利用强度周期性变化的光信号来测量光速与介质折射率的方法,可以精确测量出光传播距离改变cm数量级时光传播时间的改变.如果在光路中放入介质,用这种方法可以很精确地测量出由此引入的光程差,并给出了一个测量介质折射率的新方法.A new method to measure the speed of light and medium refractive index is presented. While a light propagation distance change cm order of magnitude it can be detected accurately change of propagation time. Using this method, the optical path difference can be detected accurately, if put medium to the light path. Therefore, it is a new method to measure medium refractive index.

关 键 词：周期性 光信号 光速 折射率 

分 类 号：O4-33[理学—物理] O4-34