光调制法测量光速的研究  

A STUDY ON THE MEASUREMENT OF LIGHT SPEED BY LIGHT-MODULATION METHOD

作　　者：陶家友[1] 廖高华[1] 梅孝安[1] 

机构地区：[1]湖南理工学院,岳阳414006

出　　处：《大学物理实验》2009年第1期47-51,共5页Physical Experiment of College

摘　　要：采用光调制法测量光速,直接对光进行调制得到调幅波,采用差频技术测量高频信号的相差,根据相位变化测量波长,得出光速并分析了误差。提出了改进方法,明显减小了实验误差。Light speed is measured by light - modulation method, i. e. the wave of amplitude modulation is created by modulating ligh directly, subsequently, the phase contrast is measured in the light of beat frequency indication, the wave length is measured according to phase change, thus the light speed is obtained and then the error is analyzed. This essay put forward a developed method which would obviously minish error.

关 键 词：光速 调制 差频 数码 

分 类 号：O435[机械工程—光学工程]