Research on the wavelength of laser monitor based on billet split lens

In order to solve the problem of wavelength shift of the laser monitor, a device based on billet split lens for measuring wavelength is designed. Taking the red light emitted by He-Ne laser as reference, measuring the distance of the interference fringes, the width of the cut part of the split lens is calculated, and then the wavelength of the measured is calculated. The device has the advantages of simple operation and high measurement accuracy, which is expected to be applied to the measurement of the emission wavelength of the laser monitor, and is of great significance to the optimization of the working performance of the laser monitor.