近年来,氦一氖激光器在计量学方面获得了日盆广泛的应用。其中鞍主要的用途之一是利用激光的干涉能力强这一优点,将激光器作为干涉仪的光源而广泛使用于线纹尺的自动检定、刻线、以及座标镗床的定位等等。在这些应用中,光波波长实际上是起了“光学尺”的作用,而激光波长的不准确会直接带来测量结果的误差。因此,必须对激光波长进行绝对测量。1.测量装置测量工作是在光谱仪和法布里一珀罗标 In recent years, helium-neon lasers have gained a wide range of applications in metrology. One of the saddles is one of the main uses of laser interference ability is the advantage of the laser as the light source of the interferometer is widely used in the automatic detection of ruler, engraving, and coordinate boring machine positioning and so on. In these applications, the wavelength of the light actually plays the role of “optical ruler,” and the inaccuracy of the laser wavelength can directly result in measurement error. Therefore, the laser wavelength must be measured absolutely. 1. Measuring device Measurement work is done in spectrometer and Fabry-Perot