本文介绍一种应用于共振吸收技术的单光路双光束的光学测量装置,形成一种光学差分法,来达到消除共存组分的吸收干扰并提高灵敏度,实现实时不接触测量的目的。 利用特制的光学调制盘轴上的旋转反光镜等一系列光学元件以及调制盘上的位置识别传感器,可以从和单色仪相接的光电倍增管得到四个相应的讯号,测量方法为 In this paper, an optical measuring device with single optical path and two beams used in resonance absorption technology is introduced to form an optical differential method to eliminate the interference caused by coexisting components and improve the sensitivity, so as to realize real-time non-contact measurement. Using a series of optical elements such as a rotating mirror on a specially prepared optical modulation disk axis and a position recognition sensor on a modulation disk, four corresponding signals can be obtained from a photomultiplier tube connected with a monochromator, and the measurement method is