基于迈克尔孙干涉仪的光波长自动测量系统  

Automatic measurement system of optical wavelength based on Michelson interferometer

作　　者：党晨[1] 李武军[1] 王党社[1] DANG Chen;LI Wu-jun;WANG Dang-she(College of Science,Xi’an Technological University,Xi’an,Shaanxi 710021,China)

机构地区：[1]西安工业大学理学院,陕西西安710021

出　　处：《大学物理》2020年第8期31-34,共4页College Physics

摘　　要：本文基于迈克尔孙干涉仪,设计了一套自动测量光波波长的系统;其包括一套磁吸式传动装置,光强自动检测模块,系统具有自动寻峰功能,实现了数据的实时处理与显示.磁吸式传动装置,解决了电机转轴与干涉仪手轮不同轴的问题,减小了电机抖动,利用单片机驱动步进电机转动干涉仪的手轮,实时记录干涉光强变化的波形,通过算法减少了仪器抖动带来的干扰,实现了光波波长的自动测量,减小了实验误差,利用显示屏实时显示实验数据,使用步进电机步进角度记录反射镜位移值,自动计算数据结果,使实验更加直观简便.In this paper,based on Michelson interferometer,a set of automatic measurement system of lightwave wavelength is designed,which includes a set of magnetic drive device,light intensity automatic detection module,and the system has the function of finding peak automatically,so the real-time processing and display of data are realized.The magnetic suction transmission solves the problem of the difference between the axes of the motor rotating shaft and the interferometer handwheel,reduces the motor jitter,uses the single chip microcomputer to drive the stepping motor to rotate the handwheel of the interferometer,records the waveform of the interference light intensity change in real time,reduces the interference caused by the instrument jitter through the algorithm,realizes the automatic measurement of lightwave wavelength,reduces the experimental error,and uses the display screen to display the experimental data in real time.The step angle of the stepper motor is used to record the displacement value of the mirror,and the data results are calculated automatically,which makes the experiment more intuitive and simple.

关 键 词：迈克尔孙干涉仪 磁力传动 自动寻峰 波长计算 

分 类 号：O4-33[理学—物理]