摘要
使用硅光电晶体三极管作为光干涉条纹传感器,采用变间隙动极板电容传感器代替传统微距测量的设计方案,利用单片机对干涉条纹进行计数并自动测量反射镜的微小位移,实现了迈克耳孙干涉仪的数字化测量.制作了检测系统及电路,完成系统的软件设计.He-Ne激光波长的测量实验结果表明,采用该方案能够缩短测量时间,提高测量精度.
The digitalization measurement of Michelson interferometer is designed by using sihcon photoelectricity dynatron as interference fringes sensor and the seperation of plates of the capaciton is varying. In our experiment, a single-chip microcontroller is used to record the interference fringes and measure automatically the tiny displacement of the reflector. For this purpose, the circuit and detection system and the corresponding software are designed. Due to the result of the wavelength measurement for He-Ne, this scheme is useful for reducing the measurement time and improving the precision.
出处
《物理实验》
2005年第11期18-21,共4页
Physics Experimentation
关键词
迈克耳孙干涉仪
微距测量
单片机
Michelson interferometer
tiny displacement measurement
single-chip microcontroller
