Abstract：In this work， we proposed a design to measure the laser wavelength based on the theory of acousto-optic effect. According to the acousto-optic Bragg diffraction effect， the relationship between the laser wavelength and diffraction spot spacing was derived by using the comparison method and taking the He-Ne laser wavelength as the standard wavelength. According to the above relationship， the method of measuring the unknown laser wavelength was proposed， and the wavelengths of two different lasers were measured. The results show that the deviation between the measured value and theoretical vale is small.
2020, Vol. 54 
